Merge tag 'drm-intel-fixes-2013-10-21' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes

Just an lvds clock gating fix and a pte clearing hack for hsw to avoid
memory corruption when hibernating - something doesn't seem to switch off
properly, we're still investigating.

* tag 'drm-intel-fixes-2013-10-21' of git://people.freedesktop.org/~danvet/drm-intel: (96 commits)
  drm/i915: Disable GGTT PTEs on GEN6+ suspend
  drm/i915: Make PTE valid encoding optional
  drm/i915: disable LVDS clock gating on CPT v2

47 files changed, 282 insertions, 123 deletions

diff --git a/drivers/char/random.c b/drivers/char/random.c
index 7737b5bd26a..7a744d39175 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -640,7 +640,7 @@ struct timer_rand_state {
  */
 void add_device_randomness(const void *buf, unsigned int size)
 {
-	unsigned long time = get_cycles() ^ jiffies;
+	unsigned long time = random_get_entropy() ^ jiffies;
 
 	mix_pool_bytes(&input_pool, buf, size, NULL);
 	mix_pool_bytes(&input_pool, &time, sizeof(time), NULL);
@@ -677,7 +677,7 @@ static void add_timer_randomness(struct timer_rand_state *state, unsigned num)
 		goto out;
 
 	sample.jiffies = jiffies;
-	sample.cycles = get_cycles();
+	sample.cycles = random_get_entropy();
 	sample.num = num;
 	mix_pool_bytes(&input_pool, &sample, sizeof(sample), NULL);
 
@@ -744,7 +744,7 @@ void add_interrupt_randomness(int irq, int irq_flags)
 	struct fast_pool	*fast_pool = &__get_cpu_var(irq_randomness);
 	struct pt_regs		*regs = get_irq_regs();
 	unsigned long		now = jiffies;
-	__u32			input[4], cycles = get_cycles();
+	__u32			input[4], cycles = random_get_entropy();
 
 	input[0] = cycles ^ jiffies;
 	input[1] = irq;
@@ -1459,12 +1459,11 @@ struct ctl_table random_table[] = {
 
 static u32 random_int_secret[MD5_MESSAGE_BYTES / 4] ____cacheline_aligned;
 
-static int __init random_int_secret_init(void)
+int random_int_secret_init(void)
 {
 	get_random_bytes(random_int_secret, sizeof(random_int_secret));
 	return 0;
 }
-late_initcall(random_int_secret_init);
 
 /*
  * Get a random word for internal kernel use only. Similar to urandom but
@@ -1483,7 +1482,7 @@ unsigned int get_random_int(void)
 
 	hash = get_cpu_var(get_random_int_hash);
 
-	hash[0] += current->pid + jiffies + get_cycles();
+	hash[0] += current->pid + jiffies + random_get_entropy();
 	md5_transform(hash, random_int_secret);
 	ret = hash[0];
 	put_cpu_var(get_random_int_hash);
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 098a8da450f..3519111c566 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -306,6 +306,7 @@ static struct dma_async_tx_descriptor *edma_prep_slave_sg(
 						EDMA_SLOT_ANY);
 			if (echan->slot[i] < 0) {
 				dev_err(dev, "Failed to allocate slot\n");
+				kfree(edesc);
 				return NULL;
 			}
 		}
diff --git a/drivers/dma/sh/rcar-hpbdma.c b/drivers/dma/sh/rcar-hpbdma.c
index 45a520281ce..ebad84591a6 100644
--- a/drivers/dma/sh/rcar-hpbdma.c
+++ b/drivers/dma/sh/rcar-hpbdma.c
@@ -93,6 +93,7 @@ struct hpb_dmae_chan {
 	void __iomem *base;
 	const struct hpb_dmae_slave_config *cfg;
 	char dev_id[16];		/* unique name per DMAC of channel */
+	dma_addr_t slave_addr;
 };
 
 struct hpb_dmae_device {
@@ -432,7 +433,6 @@ hpb_dmae_alloc_chan_resources(struct hpb_dmae_chan *hpb_chan,
 		hpb_chan->xfer_mode = XFER_DOUBLE;
 	} else {
 		dev_err(hpb_chan->shdma_chan.dev, "DCR setting error");
-		shdma_free_irq(&hpb_chan->shdma_chan);
 		return -EINVAL;
 	}
 
@@ -446,7 +446,8 @@ hpb_dmae_alloc_chan_resources(struct hpb_dmae_chan *hpb_chan,
 	return 0;
 }
 
-static int hpb_dmae_set_slave(struct shdma_chan *schan, int slave_id, bool try)
+static int hpb_dmae_set_slave(struct shdma_chan *schan, int slave_id,
+			      dma_addr_t slave_addr, bool try)
 {
 	struct hpb_dmae_chan *chan = to_chan(schan);
 	const struct hpb_dmae_slave_config *sc =
@@ -457,6 +458,7 @@ static int hpb_dmae_set_slave(struct shdma_chan *schan, int slave_id, bool try)
 	if (try)
 		return 0;
 	chan->cfg = sc;
+	chan->slave_addr = slave_addr ? : sc->addr;
 	return hpb_dmae_alloc_chan_resources(chan, sc);
 }
 
@@ -468,7 +470,7 @@ static dma_addr_t hpb_dmae_slave_addr(struct shdma_chan *schan)
 {
 	struct hpb_dmae_chan *chan = to_chan(schan);
 
-	return chan->cfg->addr;
+	return chan->slave_addr;
 }
 
 static struct shdma_desc *hpb_dmae_embedded_desc(void *buf, int i)
@@ -614,7 +616,6 @@ static void hpb_dmae_chan_remove(struct hpb_dmae_device *hpbdev)
 	shdma_for_each_chan(schan, &hpbdev->shdma_dev, i) {
 		BUG_ON(!schan);
 
-		shdma_free_irq(schan);
 		shdma_chan_remove(schan);
 	}
 	dma_dev->chancnt = 0;
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 69d8ed5416c..2ad27880cd0 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -505,6 +505,8 @@ static int i915_drm_freeze(struct drm_device *dev)
 		intel_modeset_suspend_hw(dev);
 	}
 
+	i915_gem_suspend_gtt_mappings(dev);
+
 	i915_save_state(dev);
 
 	intel_opregion_fini(dev);
@@ -648,7 +650,8 @@ static int i915_drm_thaw(struct drm_device *dev)
 		mutex_lock(&dev->struct_mutex);
 		i915_gem_restore_gtt_mappings(dev);
 		mutex_unlock(&dev->struct_mutex);
-	}
+	} else if (drm_core_check_feature(dev, DRIVER_MODESET))
+		i915_check_and_clear_faults(dev);
 
 	__i915_drm_thaw(dev);
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 35874b3a86d..ab0f2c0a440 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -497,10 +497,12 @@ struct i915_address_space {
 
 	/* FIXME: Need a more generic return type */
 	gen6_gtt_pte_t (*pte_encode)(dma_addr_t addr,
-				     enum i915_cache_level level);
+				     enum i915_cache_level level,
+				     bool valid); /* Create a valid PTE */
 	void (*clear_range)(struct i915_address_space *vm,
 			    unsigned int first_entry,
-			    unsigned int num_entries);
+			    unsigned int num_entries,
+			    bool use_scratch);
 	void (*insert_entries)(struct i915_address_space *vm,
 			       struct sg_table *st,
 			       unsigned int first_entry,
@@ -2065,6 +2067,8 @@ void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt,
 void i915_ppgtt_unbind_object(struct i915_hw_ppgtt *ppgtt,
 			      struct drm_i915_gem_object *obj);
 
+void i915_check_and_clear_faults(struct drm_device *dev);
+void i915_gem_suspend_gtt_mappings(struct drm_device *dev);
 void i915_gem_restore_gtt_mappings(struct drm_device *dev);
 int __must_check i915_gem_gtt_prepare_object(struct drm_i915_gem_object *obj);
 void i915_gem_gtt_bind_object(struct drm_i915_gem_object *obj,
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 212f6d8c35e..1f7b4caefb6 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -58,9 +58,10 @@
 #define HSW_WT_ELLC_LLC_AGE0		HSW_CACHEABILITY_CONTROL(0x6)
 
 static gen6_gtt_pte_t snb_pte_encode(dma_addr_t addr,
-				     enum i915_cache_level level)
+				     enum i915_cache_level level,
+				     bool valid)
 {
-	gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+	gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
 	pte |= GEN6_PTE_ADDR_ENCODE(addr);
 
 	switch (level) {
@@ -79,9 +80,10 @@ static gen6_gtt_pte_t snb_pte_encode(dma_addr_t addr,
 }
 
 static gen6_gtt_pte_t ivb_pte_encode(dma_addr_t addr,
-				     enum i915_cache_level level)
+				     enum i915_cache_level level,
+				     bool valid)
 {
-	gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+	gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
 	pte |= GEN6_PTE_ADDR_ENCODE(addr);
 
 	switch (level) {
@@ -105,9 +107,10 @@ static gen6_gtt_pte_t ivb_pte_encode(dma_addr_t addr,
 #define BYT_PTE_SNOOPED_BY_CPU_CACHES	(1 << 2)
 
 static gen6_gtt_pte_t byt_pte_encode(dma_addr_t addr,
-				     enum i915_cache_level level)
+				     enum i915_cache_level level,
+				     bool valid)
 {
-	gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+	gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
 	pte |= GEN6_PTE_ADDR_ENCODE(addr);
 
 	/* Mark the page as writeable.  Other platforms don't have a
@@ -122,9 +125,10 @@ static gen6_gtt_pte_t byt_pte_encode(dma_addr_t addr,
 }
 
 static gen6_gtt_pte_t hsw_pte_encode(dma_addr_t addr,
-				     enum i915_cache_level level)
+				     enum i915_cache_level level,
+				     bool valid)
 {
-	gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+	gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
 	pte |= HSW_PTE_ADDR_ENCODE(addr);
 
 	if (level != I915_CACHE_NONE)
@@ -134,9 +138,10 @@ static gen6_gtt_pte_t hsw_pte_encode(dma_addr_t addr,
 }
 
 static gen6_gtt_pte_t iris_pte_encode(dma_addr_t addr,
-				      enum i915_cache_level level)
+				      enum i915_cache_level level,
+				      bool valid)
 {
-	gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+	gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
 	pte |= HSW_PTE_ADDR_ENCODE(addr);
 
 	switch (level) {
@@ -236,7 +241,8 @@ static int gen6_ppgtt_enable(struct drm_device *dev)
 /* PPGTT support for Sandybdrige/Gen6 and later */
 static void gen6_ppgtt_clear_range(struct i915_address_space *vm,
 				   unsigned first_entry,
-				   unsigned num_entries)
+				   unsigned num_entries,
+				   bool use_scratch)
 {
 	struct i915_hw_ppgtt *ppgtt =
 		container_of(vm, struct i915_hw_ppgtt, base);
@@ -245,7 +251,7 @@ static void gen6_ppgtt_clear_range(struct i915_address_space *vm,
 	unsigned first_pte = first_entry % I915_PPGTT_PT_ENTRIES;
 	unsigned last_pte, i;
 
-	scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC);
+	scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC, true);
 
 	while (num_entries) {
 		last_pte = first_pte + num_entries;
@@ -282,7 +288,7 @@ static void gen6_ppgtt_insert_entries(struct i915_address_space *vm,
 		dma_addr_t page_addr;
 
 		page_addr = sg_page_iter_dma_address(&sg_iter);
-		pt_vaddr[act_pte] = vm->pte_encode(page_addr, cache_level);
+		pt_vaddr[act_pte] = vm->pte_encode(page_addr, cache_level, true);
 		if (++act_pte == I915_PPGTT_PT_ENTRIES) {
 			kunmap_atomic(pt_vaddr);
 			act_pt++;
@@ -367,7 +373,7 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
 	}
 
 	ppgtt->base.clear_range(&ppgtt->base, 0,
-				ppgtt->num_pd_entries * I915_PPGTT_PT_ENTRIES);
+				ppgtt->num_pd_entries * I915_PPGTT_PT_ENTRIES, true);
 
 	ppgtt->pd_offset = first_pd_entry_in_global_pt * sizeof(gen6_gtt_pte_t);
 
@@ -444,7 +450,8 @@ void i915_ppgtt_unbind_object(struct i915_hw_ppgtt *ppgtt,
 {
 	ppgtt->base.clear_range(&ppgtt->base,
 				i915_gem_obj_ggtt_offset(obj) >> PAGE_SHIFT,
-				obj->base.size >> PAGE_SHIFT);
+				obj->base.size >> PAGE_SHIFT,
+				true);
 }
 
 extern int intel_iommu_gfx_mapped;
@@ -485,15 +492,65 @@ static void undo_idling(struct drm_i915_private *dev_priv, bool interruptible)
 		dev_priv->mm.interruptible = interruptible;
 }
 
+void i915_check_and_clear_faults(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_ring_buffer *ring;
+	int i;
+
+	if (INTEL_INFO(dev)->gen < 6)
+		return;
+
+	for_each_ring(ring, dev_priv, i) {
+		u32 fault_reg;
+		fault_reg = I915_READ(RING_FAULT_REG(ring));
+		if (fault_reg & RING_FAULT_VALID) {
+			DRM_DEBUG_DRIVER("Unexpected fault\n"
+					 "\tAddr: 0x%08lx\\n"
+					 "\tAddress space: %s\n"
+					 "\tSource ID: %d\n"
+					 "\tType: %d\n",
+					 fault_reg & PAGE_MASK,
+					 fault_reg & RING_FAULT_GTTSEL_MASK ? "GGTT" : "PPGTT",
+					 RING_FAULT_SRCID(fault_reg),
+					 RING_FAULT_FAULT_TYPE(fault_reg));
+			I915_WRITE(RING_FAULT_REG(ring),
+				   fault_reg & ~RING_FAULT_VALID);
+		}
+	}
+	POSTING_READ(RING_FAULT_REG(&dev_priv->ring[RCS]));
+}
+
+void i915_gem_suspend_gtt_mappings(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	/* Don't bother messing with faults pre GEN6 as we have little
+	 * documentation supporting that it's a good idea.
+	 */
+	if (INTEL_INFO(dev)->gen < 6)
+		return;
+
+	i915_check_and_clear_faults(dev);
+
+	dev_priv->gtt.base.clear_range(&dev_priv->gtt.base,
+				       dev_priv->gtt.base.start / PAGE_SIZE,
+				       dev_priv->gtt.base.total / PAGE_SIZE,
+				       false);
+}
+
 void i915_gem_restore_gtt_mappings(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct drm_i915_gem_object *obj;
 
+	i915_check_and_clear_faults(dev);
+
 	/* First fill our portion of the GTT with scratch pages */
 	dev_priv->gtt.base.clear_range(&dev_priv->gtt.base,
 				       dev_priv->gtt.base.start / PAGE_SIZE,
-				       dev_priv->gtt.base.total / PAGE_SIZE);
+				       dev_priv->gtt.base.total / PAGE_SIZE,
+				       true);
 
 	list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
 		i915_gem_clflush_object(obj, obj->pin_display);
@@ -536,7 +593,7 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm,
 
 	for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) {
 		addr = sg_page_iter_dma_address(&sg_iter);
-		iowrite32(vm->pte_encode(addr, level), &gtt_entries[i]);
+		iowrite32(vm->pte_encode(addr, level, true), &gtt_entries[i]);
 		i++;
 	}
 
@@ -548,7 +605,7 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm,
 	 */
 	if (i != 0)
 		WARN_ON(readl(&gtt_entries[i-1]) !=
-			vm->pte_encode(addr, level));
+			vm->pte_encode(addr, level, true));
 
 	/* This next bit makes the above posting read even more important. We
 	 * want to flush the TLBs only after we're certain all the PTE updates
@@ -560,7 +617,8 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm,
 
 static void gen6_ggtt_clear_range(struct i915_address_space *vm,
 				  unsigned int first_entry,
-				  unsigned int num_entries)
+				  unsigned int num_entries,
+				  bool use_scratch)
 {
 	struct drm_i915_private *dev_priv = vm->dev->dev_private;
 	gen6_gtt_pte_t scratch_pte, __iomem *gtt_base =
@@ -573,7 +631,8 @@ static void gen6_ggtt_clear_range(struct i915_address_space *vm,
 		 first_entry, num_entries, max_entries))
 		num_entries = max_entries;
 
-	scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC);
+	scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC, use_scratch);
+
 	for (i = 0; i < num_entries; i++)
 		iowrite32(scratch_pte, &gtt_base[i]);
 	readl(gtt_base);
@@ -594,7 +653,8 @@ static void i915_ggtt_insert_entries(struct i915_address_space *vm,
 
 static void i915_ggtt_clear_range(struct i915_address_space *vm,
 				  unsigned int first_entry,
-				  unsigned int num_entries)
+				  unsigned int num_entries,
+				  bool unused)
 {
 	intel_gtt_clear_range(first_entry, num_entries);
 }
@@ -622,7 +682,8 @@ void i915_gem_gtt_unbind_object(struct drm_i915_gem_object *obj)
 
 	dev_priv->gtt.base.clear_range(&dev_priv->gtt.base,
 				       entry,
-				       obj->base.size >> PAGE_SHIFT);
+				       obj->base.size >> PAGE_SHIFT,
+				       true);
 
 	obj->has_global_gtt_mapping = 0;
 }
@@ -709,11 +770,11 @@ void i915_gem_setup_global_gtt(struct drm_device *dev,
 		const unsigned long count = (hole_end - hole_start) / PAGE_SIZE;
 		DRM_DEBUG_KMS("clearing unused GTT space: [%lx, %lx]\n",
 			      hole_start, hole_end);
-		ggtt_vm->clear_range(ggtt_vm, hole_start / PAGE_SIZE, count);
+		ggtt_vm->clear_range(ggtt_vm, hole_start / PAGE_SIZE, count, true);
 	}
 
 	/* And finally clear the reserved guard page */
-	ggtt_vm->clear_range(ggtt_vm, end / PAGE_SIZE - 1, 1);
+	ggtt_vm->clear_range(ggtt_vm, end / PAGE_SIZE - 1, 1, true);
 }
 
 static bool
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 38f96f65d87..ef9b35479f0 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -604,6 +604,10 @@
 #define   ARB_MODE_SWIZZLE_IVB	(1<<5)
 #define RENDER_HWS_PGA_GEN7	(0x04080)
 #define RING_FAULT_REG(ring)	(0x4094 + 0x100*(ring)->id)
+#define   RING_FAULT_GTTSEL_MASK (1<<11)
+#define   RING_FAULT_SRCID(x)	((x >> 3) & 0xff)
+#define   RING_FAULT_FAULT_TYPE(x) ((x >> 1) & 0x3)
+#define   RING_FAULT_VALID	(1<<0)
 #define DONE_REG		0x40b0
 #define BSD_HWS_PGA_GEN7	(0x04180)
 #define BLT_HWS_PGA_GEN7	(0x04280)
@@ -4279,7 +4283,9 @@
 #define FDI_RX_CHICKEN(pipe) _PIPE(pipe, _FDI_RXA_CHICKEN, _FDI_RXB_CHICKEN)
 
 #define SOUTH_DSPCLK_GATE_D	0xc2020
+#define  PCH_DPLUNIT_CLOCK_GATE_DISABLE (1<<30)
 #define  PCH_DPLSUNIT_CLOCK_GATE_DISABLE (1<<29)
+#define  PCH_CPUNIT_CLOCK_GATE_DISABLE (1<<14)
 #define  PCH_LP_PARTITION_LEVEL_DISABLE  (1<<12)
 
 /* CPU: FDI_TX */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f4c5e95b2d6..26c2ea3e985 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4759,7 +4759,9 @@ static void cpt_init_clock_gating(struct drm_device *dev)
 	 * gating for the panel power sequencer or it will fail to
 	 * start up when no ports are active.
 	 */
-	I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
+	I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE |
+		   PCH_DPLUNIT_CLOCK_GATE_DISABLE |
+		   PCH_CPUNIT_CLOCK_GATE_DISABLE);
 	I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
 		   DPLS_EDP_PPS_FIX_DIS);
 	/* The below fixes the weird display corruption, a few pixels shifted
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 71b70e3a7a7..c91d547191d 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -241,6 +241,7 @@ config HID_HOLTEK
 	  - Sharkoon Drakonia / Perixx MX-2000 gaming mice
 	  - Tracer Sniper TRM-503 / NOVA Gaming Slider X200 /
 	    Zalman ZM-GM1
+	  - SHARKOON DarkGlider Gaming mouse
 
 config HOLTEK_FF
 	bool "Holtek On Line Grip force feedback support"
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index b8470b1a10f..5a8c01112a2 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1715,6 +1715,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
diff --git a/drivers/hid/hid-holtek-mouse.c b/drivers/hid/hid-holtek-mouse.c
index 7e6db3cf46f..e696566cde4 100644
--- a/drivers/hid/hid-holtek-mouse.c
+++ b/drivers/hid/hid-holtek-mouse.c
@@ -27,6 +27,7 @@
  * - USB ID 04d9:a067, sold as Sharkoon Drakonia and Perixx MX-2000
  * - USB ID 04d9:a04a, sold as Tracer Sniper TRM-503, NOVA Gaming Slider X200
  *   and Zalman ZM-GM1
+ * - USB ID 04d9:a081, sold as SHARKOON DarkGlider Gaming mouse
  */
 
 static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
@@ -46,6 +47,7 @@ static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 			}
 			break;
 		case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A:
+		case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081:
 			if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f
 					&& rdesc[111] == 0xff && rdesc[112] == 0x7f) {
 				hid_info(hdev, "Fixing up report descriptor\n");
@@ -63,6 +65,8 @@ static const struct hid_device_id holtek_mouse_devices[] = {
 			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
 			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
+			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, holtek_mouse_devices);
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index e60e8d53069..9cbc7ab07df 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -450,6 +450,7 @@
 #define USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD	0xa055
 #define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067	0xa067
 #define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A	0xa04a
+#define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081	0xa081
 
 #define USB_VENDOR_ID_IMATION		0x0718
 #define USB_DEVICE_ID_DISC_STAKKA	0xd000
diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c
index 602c188e9d8..6101816a7dd 100644
--- a/drivers/hid/hid-roccat-kone.c
+++ b/drivers/hid/hid-roccat-kone.c
@@ -382,7 +382,7 @@ static ssize_t kone_sysfs_write_profilex(struct file *fp,
 }
 #define PROFILE_ATTR(number)					\
 static struct bin_attribute bin_attr_profile##number = {	\
-	.attr = { .name = "profile##number", .mode = 0660 },	\
+	.attr = { .name = "profile" #number, .mode = 0660 },	\
 	.size = sizeof(struct kone_profile),			\
 	.read = kone_sysfs_read_profilex,			\
 	.write = kone_sysfs_write_profilex,			\
diff --git a/drivers/hid/hid-roccat-koneplus.c b/drivers/hid/hid-roccat-koneplus.c
index 5ddf605b6b8..5e99fcdc71b 100644
--- a/drivers/hid/hid-roccat-koneplus.c
+++ b/drivers/hid/hid-roccat-koneplus.c
@@ -229,13 +229,13 @@ static ssize_t koneplus_sysfs_read_profilex_buttons(struct file *fp,
 
 #define PROFILE_ATTR(number)						\
 static struct bin_attribute bin_attr_profile##number##_settings = {	\
-	.attr = { .name = "profile##number##_settings", .mode = 0440 },	\
+	.attr = { .name = "profile" #number "_settings", .mode = 0440 },	\
 	.size = KONEPLUS_SIZE_PROFILE_SETTINGS,				\
 	.read = koneplus_sysfs_read_profilex_settings,			\
 	.private = &profile_numbers[number-1],				\
 };									\
 static struct bin_attribute bin_attr_profile##number##_buttons = {	\
-	.attr = { .name = "profile##number##_buttons", .mode = 0440 },	\
+	.attr = { .name = "profile" #number "_buttons", .mode = 0440 },	\
 	.size = KONEPLUS_SIZE_PROFILE_BUTTONS,				\
 	.read = koneplus_sysfs_read_profilex_buttons,			\
 	.private = &profile_numbers[number-1],				\
diff --git a/drivers/hid/hid-roccat-kovaplus.c b/drivers/hid/hid-roccat-kovaplus.c
index 515bc03136c..0c8e1ef0b67 100644
--- a/drivers/hid/hid-roccat-kovaplus.c
+++ b/drivers/hid/hid-roccat-kovaplus.c
@@ -257,13 +257,13 @@ static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
 
 #define PROFILE_ATTR(number)						\
 static struct bin_attribute bin_attr_profile##number##_settings = {	\
-	.attr = { .name = "profile##number##_settings", .mode = 0440 },	\
+	.attr = { .name = "profile" #number "_settings", .mode = 0440 },	\
 	.size = KOVAPLUS_SIZE_PROFILE_SETTINGS,				\
 	.read = kovaplus_sysfs_read_profilex_settings,			\
 	.private = &profile_numbers[number-1],				\
 };									\
 static struct bin_attribute bin_attr_profile##number##_buttons = {	\
-	.attr = { .name = "profile##number##_buttons", .mode = 0440 },	\
+	.attr = { .name = "profile" #number "_buttons", .mode = 0440 },	\
 	.size = KOVAPLUS_SIZE_PROFILE_BUTTONS,				\
 	.read = kovaplus_sysfs_read_profilex_buttons,			\
 	.private = &profile_numbers[number-1],				\
diff --git a/drivers/hid/hid-roccat-pyra.c b/drivers/hid/hid-roccat-pyra.c
index 5a6dbbeee79..1a07e07d99a 100644
--- a/drivers/hid/hid-roccat-pyra.c
+++ b/drivers/hid/hid-roccat-pyra.c
@@ -225,13 +225,13 @@ static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
 
 #define PROFILE_ATTR(number)						\
 static struct bin_attribute bin_attr_profile##number##_settings = {	\
-	.attr = { .name = "profile##number##_settings", .mode = 0440 },	\
+	.attr = { .name = "profile" #number "_settings", .mode = 0440 },	\
 	.size = PYRA_SIZE_PROFILE_SETTINGS,				\
 	.read = pyra_sysfs_read_profilex_settings,			\
 	.private = &profile_numbers[number-1],				\
 };									\
 static struct bin_attribute bin_attr_profile##number##_buttons = {	\
-	.attr = { .name = "profile##number##_buttons", .mode = 0440 },	\
+	.attr = { .name = "profile" #number "_buttons", .mode = 0440 },	\
 	.size = PYRA_SIZE_PROFILE_BUTTONS,				\
 	.read = pyra_sysfs_read_profilex_buttons,			\
 	.private = &profile_numbers[number-1],				\
diff --git a/drivers/hid/hid-wiimote-modules.c b/drivers/hid/hid-wiimote-modules.c
index 2e7d644dba1..71adf9e60b1 100644
--- a/drivers/hid/hid-wiimote-modules.c
+++ b/drivers/hid/hid-wiimote-modules.c
@@ -119,12 +119,22 @@ static const struct wiimod_ops wiimod_keys = {
  * the rumble motor, this flag shouldn't be set.
  */
 
+/* used by wiimod_rumble and wiipro_rumble */
+static void wiimod_rumble_worker(struct work_struct *work)
+{
+	struct wiimote_data *wdata = container_of(work, struct wiimote_data,
+						  rumble_worker);
+
+	spin_lock_irq(&wdata->state.lock);
+	wiiproto_req_rumble(wdata, wdata->state.cache_rumble);
+	spin_unlock_irq(&wdata->state.lock);
+}
+
 static int wiimod_rumble_play(struct input_dev *dev, void *data,
 			      struct ff_effect *eff)
 {
 	struct wiimote_data *wdata = input_get_drvdata(dev);
 	__u8 value;
-	unsigned long flags;
 
 	/*
 	 * The wiimote supports only a single rumble motor so if any magnitude
@@ -137,9 +147,10 @@ static int wiimod_rumble_play(struct input_dev *dev, void *data,
 	else
 		value = 0;
 
-	spin_lock_irqsave(&wdata->state.lock, flags);
-	wiiproto_req_rumble(wdata, value);
-	spin_unlock_irqrestore(&wdata->state.lock, flags);
+	/* Locking state.lock here might deadlock with input_event() calls.
+	 * schedule_work acts as barrier. Merging multiple changes is fine. */
+	wdata->state.cache_rumble = value;
+	schedule_work(&wdata->rumble_worker);
 
 	return 0;
 }
@@ -147,6 +158,8 @@ static int wiimod_rumble_play(struct input_dev *dev, void *data,
 static int wiimod_rumble_probe(const struct wiimod_ops *ops,
 			       struct wiimote_data *wdata)
 {
+	INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
+
 	set_bit(FF_RUMBLE, wdata->input->ffbit);
 	if (input_ff_create_memless(wdata->input, NULL, wiimod_rumble_play))
 		return -ENOMEM;
@@ -159,6 +172,8 @@ static void wiimod_rumble_remove(const struct wiimod_ops *ops,
 {
 	unsigned long flags;
 
+	cancel_work_sync(&wdata->rumble_worker);
+
 	spin_lock_irqsave(&wdata->state.lock, flags);
 	wiiproto_req_rumble(wdata, 0);
 	spin_unlock_irqrestore(&wdata->state.lock, flags);
@@ -1731,7 +1746,6 @@ static int wiimod_pro_play(struct input_dev *dev, void *data,
 {
 	struct wiimote_data *wdata = input_get_drvdata(dev);
 	__u8 value;
-	unsigned long flags;
 
 	/*
 	 * The wiimote supports only a single rumble motor so if any magnitude
@@ -1744,9 +1758,10 @@ static int wiimod_pro_play(struct input_dev *dev, void *data,
 	else
 		value = 0;
 
-	spin_lock_irqsave(&wdata->state.lock, flags);
-	wiiproto_req_rumble(wdata, value);
-	spin_unlock_irqrestore(&wdata->state.lock, flags);
+	/* Locking state.lock here might deadlock with input_event() calls.
+	 * schedule_work acts as barrier. Merging multiple changes is fine. */
+	wdata->state.cache_rumble = value;
+	schedule_work(&wdata->rumble_worker);
 
 	return 0;
 }
@@ -1756,6 +1771,8 @@ static int wiimod_pro_probe(const struct wiimod_ops *ops,
 {
 	int ret, i;
 
+	INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
+
 	wdata->extension.input = input_allocate_device();
 	if (!wdata->extension.input)
 		return -ENOMEM;
@@ -1817,12 +1834,13 @@ static void wiimod_pro_remove(const struct wiimod_ops *ops,
 	if (!wdata->extension.input)
 		return;
 
+	input_unregister_device(wdata->extension.input);
+	wdata->extension.input = NULL;
+	cancel_work_sync(&wdata->rumble_worker);
+
 	spin_lock_irqsave(&wdata->state.lock, flags);
 	wiiproto_req_rumble(wdata, 0);
 	spin_unlock_irqrestore(&wdata->state.lock, flags);
-
-	input_unregister_device(wdata->extension.input);
-	wdata->extension.input = NULL;
 }
 
 static const struct wiimod_ops wiimod_pro = {
diff --git a/drivers/hid/hid-wiimote.h b/drivers/hid/hid-wiimote.h
index f1474f372c0..75db0c40003 100644
--- a/drivers/hid/hid-wiimote.h
+++ b/drivers/hid/hid-wiimote.h
@@ -133,13 +133,15 @@ struct wiimote_state {
 	__u8 *cmd_read_buf;
 	__u8 cmd_read_size;
 
-	/* calibration data */
+	/* calibration/cache data */
 	__u16 calib_bboard[4][3];
+	__u8 cache_rumble;
 };
 
 struct wiimote_data {
 	struct hid_device *hdev;
 	struct input_dev *input;
+	struct work_struct rumble_worker;
 	struct led_classdev *leds[4];
 	struct input_dev *accel;
 	struct input_dev *ir;
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 8918dd12bb6..6a6dd5cd783 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -308,18 +308,25 @@ static int hidraw_fasync(int fd, struct file *file, int on)
 static void drop_ref(struct hidraw *hidraw, int exists_bit)
 {
 	if (exists_bit) {
-		hid_hw_close(hidraw->hid);
 		hidraw->exist = 0;
-		if (hidraw->open)
+		if (hidraw->open) {
+			hid_hw_close(hidraw->hid);
 			wake_up_interruptible(&hidraw->wait);
+		}
 	} else {
 		--hidraw->open;
 	}
-
-	if (!hidraw->open && !hidraw->exist) {
-		device_destroy(hidraw_class, MKDEV(hidraw_major, hidraw->minor));
-		hidraw_table[hidraw->minor] = NULL;
-		kfree(hidraw);
+	if (!hidraw->open) {
+		if (!hidraw->exist) {
+			device_destroy(hidraw_class,
+					MKDEV(hidraw_major, hidraw->minor));
+			hidraw_table[hidraw->minor] = NULL;
+			kfree(hidraw);
+		} else {
+			/* close device for last reader */
+			hid_hw_power(hidraw->hid, PM_HINT_NORMAL);
+			hid_hw_close(hidraw->hid);
+		}
 	}
 }
 
diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
index 5bf2fb78584..93b00d76374 100644
--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -615,7 +615,7 @@ static const struct file_operations uhid_fops = {
 
 static struct miscdevice uhid_misc = {
 	.fops		= &uhid_fops,
-	.minor		= MISC_DYNAMIC_MINOR,
+	.minor		= UHID_MINOR,
 	.name		= UHID_NAME,
 };
 
@@ -634,4 +634,5 @@ module_exit(uhid_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
 MODULE_DESCRIPTION("User-space I/O driver support for HID subsystem");
+MODULE_ALIAS_MISCDEV(UHID_MINOR);
 MODULE_ALIAS("devname:" UHID_NAME);
diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index 98814d12a60..3288f13d2d8 100644
--- a/drivers/hwmon/applesmc.c
+++ b/drivers/hwmon/applesmc.c
@@ -230,6 +230,7 @@ static int send_argument(const char *key)
 
 static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len)
 {
+	u8 status, data = 0;
 	int i;
 
 	if (send_command(cmd) || send_argument(key)) {
@@ -237,6 +238,7 @@ static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len)
 		return -EIO;
 	}
 
+	/* This has no effect on newer (2012) SMCs */
 	if (send_byte(len, APPLESMC_DATA_PORT)) {
 		pr_warn("%.4s: read len fail\n", key);
 		return -EIO;
@@ -250,6 +252,17 @@ static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len)
 		buffer[i] = inb(APPLESMC_DATA_PORT);
 	}
 
+	/* Read the data port until bit0 is cleared */
+	for (i = 0; i < 16; i++) {
+		udelay(APPLESMC_MIN_WAIT);
+		status = inb(APPLESMC_CMD_PORT);
+		if (!(status & 0x01))
+			break;
+		data = inb(APPLESMC_DATA_PORT);
+	}
+	if (i)
+		pr_warn("flushed %d bytes, last value is: %d\n", i, data);
+
 	return 0;
 }
 
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 4c1b60539a2..0aa01136f8d 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -270,7 +270,8 @@ static SIMPLE_DEV_PM_OPS(dw_i2c_dev_pm_ops, dw_i2c_suspend, dw_i2c_resume);
 MODULE_ALIAS("platform:i2c_designware");
 
 static struct platform_driver dw_i2c_driver = {
-	.remove		= dw_i2c_remove,
+	.probe = dw_i2c_probe,
+	.remove = dw_i2c_remove,
 	.driver		= {
 		.name	= "i2c_designware",
 		.owner	= THIS_MODULE,
@@ -282,7 +283,7 @@ static struct platform_driver dw_i2c_driver = {
 
 static int __init dw_i2c_init_driver(void)
 {
-	return platform_driver_probe(&dw_i2c_driver, dw_i2c_probe);
+	return platform_driver_register(&dw_i2c_driver);
 }
 subsys_initcall(dw_i2c_init_driver);
 
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index ccf46656bda..1d7efa3169c 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -365,7 +365,7 @@ static void i2c_imx_stop(struct imx_i2c_struct *i2c_imx)
 	clk_disable_unprepare(i2c_imx->clk);
 }
 
-static void __init i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx,
+static void i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx,
 							unsigned int rate)
 {
 	struct imx_i2c_clk_pair *i2c_clk_div = i2c_imx->hwdata->clk_div;
@@ -589,7 +589,7 @@ static struct i2c_algorithm i2c_imx_algo = {
 	.functionality	= i2c_imx_func,
 };
 
-static int __init i2c_imx_probe(struct platform_device *pdev)
+static int i2c_imx_probe(struct platform_device *pdev)
 {
 	const struct of_device_id *of_id = of_match_device(i2c_imx_dt_ids,
 							   &pdev->dev);
@@ -697,7 +697,7 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
 	return 0;   /* Return OK */
 }
 
-static int __exit i2c_imx_remove(struct platform_device *pdev)
+static int i2c_imx_remove(struct platform_device *pdev)
 {
 	struct imx_i2c_struct *i2c_imx = platform_get_drvdata(pdev);
 
@@ -715,7 +715,8 @@ static int __exit i2c_imx_remove(struct platform_device *pdev)
 }
 
 static struct platform_driver i2c_imx_driver = {
-	.remove		= __exit_p(i2c_imx_remove),
+	.probe = i2c_imx_probe,
+	.remove = i2c_imx_remove,
 	.driver	= {
 		.name	= DRIVER_NAME,
 		.owner	= THIS_MODULE,
@@ -726,7 +727,7 @@ static struct platform_driver i2c_imx_driver = {
 
 static int __init i2c_adap_imx_init(void)
 {
-	return platform_driver_probe(&i2c_imx_driver, i2c_imx_probe);
+	return platform_driver_register(&i2c_imx_driver);
 }
 subsys_initcall(i2c_adap_imx_init);
 
diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index f4a01675fa7..b7c85777470 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -780,12 +780,13 @@ static struct platform_driver mxs_i2c_driver = {
 		   .owner = THIS_MODULE,
 		   .of_match_table = mxs_i2c_dt_ids,
 		   },
+	.probe = mxs_i2c_probe,
 	.remove = mxs_i2c_remove,
 };
 
 static int __init mxs_i2c_init(void)
 {
-	return platform_driver_probe(&mxs_i2c_driver, mxs_i2c_probe);
+	return platform_driver_register(&mxs_i2c_driver);
 }
 subsys_initcall(mxs_i2c_init);
 
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 6d8308d5dc4..9967a6f9c2f 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -939,6 +939,9 @@ omap_i2c_isr_thread(int this_irq, void *dev_id)
 		/*
 		 * ProDB0017052: Clear ARDY bit twice
 		 */
+		if (stat & OMAP_I2C_STAT_ARDY)
+			omap_i2c_ack_stat(dev, OMAP_I2C_STAT_ARDY);
+
 		if (stat & (OMAP_I2C_STAT_ARDY | OMAP_I2C_STAT_NACK |
 					OMAP_I2C_STAT_AL)) {
 			omap_i2c_ack_stat(dev, (OMAP_I2C_STAT_RRDY |
diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c
index f8f6f2e552d..04a17b9b38b 100644
--- a/drivers/i2c/busses/i2c-stu300.c
+++ b/drivers/i2c/busses/i2c-stu300.c
@@ -859,8 +859,7 @@ static const struct i2c_algorithm stu300_algo = {
 	.functionality	= stu300_func,
 };
 
-static int __init
-stu300_probe(struct platform_device *pdev)
+static int stu300_probe(struct platform_device *pdev)
 {
 	struct stu300_dev *dev;
 	struct i2c_adapter *adap;
@@ -966,8 +965,7 @@ static SIMPLE_DEV_PM_OPS(stu300_pm, stu300_suspend, stu300_resume);
 #define STU300_I2C_PM	NULL
 #endif
 
-static int __exit
-stu300_remove(struct platform_device *pdev)
+static int stu300_remove(struct platform_device *pdev)
 {
 	struct stu300_dev *dev = platform_get_drvdata(pdev);
 
@@ -989,13 +987,14 @@ static struct platform_driver stu300_i2c_driver = {
 		.pm	= STU300_I2C_PM,
 		.of_match_table = stu300_dt_match,
 	},
-	.remove		= __exit_p(stu300_remove),
+	.probe = stu300_probe,
+	.remove = stu300_remove,
 
 };
 
 static int __init stu300_init(void)
 {
-	return platform_driver_probe(&stu300_i2c_driver, stu300_probe);
+	return platform_driver_register(&stu300_i2c_driver);
 }
 
 static void __exit stu300_exit(void)
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 29d3f045a2b..3be58f89ac7 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1134,6 +1134,9 @@ static void acpi_i2c_register_devices(struct i2c_adapter *adap)
 	acpi_handle handle;
 	acpi_status status;
 
+	if (!adap->dev.parent)
+		return;
+
 	handle = ACPI_HANDLE(adap->dev.parent);
 	if (!handle)
 		return;
diff --git a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
index 74b41ae690f..928656e241d 100644
--- a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
+++ b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
@@ -200,7 +200,7 @@ static int i2c_arbitrator_probe(struct platform_device *pdev)
 	arb->parent = of_find_i2c_adapter_by_node(parent_np);
 	if (!arb->parent) {
 		dev_err(dev, "Cannot find parent bus\n");
-		return -EINVAL;
+		return -EPROBE_DEFER;
 	}
 
 	/* Actually add the mux adapter */
diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
index 5d4a99ba743..a764da777f0 100644
--- a/drivers/i2c/muxes/i2c-mux-gpio.c
+++ b/drivers/i2c/muxes/i2c-mux-gpio.c
@@ -66,7 +66,7 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux,
 	struct device_node *adapter_np, *child;
 	struct i2c_adapter *adapter;
 	unsigned *values, *gpios;
-	int i = 0;
+	int i = 0, ret;
 
 	if (!np)
 		return -ENODEV;
@@ -79,7 +79,7 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux,
 	adapter = of_find_i2c_adapter_by_node(adapter_np);
 	if (!adapter) {
 		dev_err(&pdev->dev, "Cannot find parent bus\n");
-		return -ENODEV;
+		return -EPROBE_DEFER;
 	}
 	mux->data.parent = i2c_adapter_id(adapter);
 	put_device(&adapter->dev);
@@ -116,8 +116,12 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux,
 		return -ENOMEM;
 	}
 
-	for (i = 0; i < mux->data.n_gpios; i++)
-		gpios[i] = of_get_named_gpio(np, "mux-gpios", i);
+	for (i = 0; i < mux->data.n_gpios; i++) {
+		ret = of_get_named_gpio(np, "mux-gpios", i);
+		if (ret < 0)
+			return ret;
+		gpios[i] = ret;
+	}
 
 	mux->data.gpios = gpios;
 
@@ -177,7 +181,7 @@ static int i2c_mux_gpio_probe(struct platform_device *pdev)
 	if (!parent) {
 		dev_err(&pdev->dev, "Parent adapter (%d) not found\n",
 			mux->data.parent);
-		return -ENODEV;
+		return -EPROBE_DEFER;
 	}
 
 	mux->parent = parent;
diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c
index 69a91732ae6..68a37157377 100644
--- a/drivers/i2c/muxes/i2c-mux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c
@@ -113,7 +113,7 @@ static int i2c_mux_pinctrl_parse_dt(struct i2c_mux_pinctrl *mux,
 	adapter = of_find_i2c_adapter_by_node(adapter_np);
 	if (!adapter) {
 		dev_err(mux->dev, "Cannot find parent bus\n");
-		return -ENODEV;
+		return -EPROBE_DEFER;
 	}
 	mux->pdata->parent_bus_num = i2c_adapter_id(adapter);
 	put_device(&adapter->dev);
@@ -211,7 +211,7 @@ static int i2c_mux_pinctrl_probe(struct platform_device *pdev)
 	if (!mux->parent) {
 		dev_err(&pdev->dev, "Parent adapter (%d) not found\n",
 			mux->pdata->parent_bus_num);
-		ret = -ENODEV;
+		ret = -EPROBE_DEFER;
 		goto err;
 	}
 
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index fe302e33f72..c880ebaf155 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -52,7 +52,7 @@ config AMD_IOMMU
 	select PCI_PRI
 	select PCI_PASID
 	select IOMMU_API
-	depends on X86_64 && PCI && ACPI && X86_IO_APIC
+	depends on X86_64 && PCI && ACPI
 	---help---
 	  With this option you can enable support for AMD IOMMU hardware in
 	  your system. An IOMMU is a hardware component which provides
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 71eb233b9ac..b6a74bcbb08 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -996,6 +996,7 @@ static void request_write(struct cached_dev *dc, struct search *s)
 		closure_bio_submit(bio, cl, s->d);
 	} else {
 		bch_writeback_add(dc);
+		s->op.cache_bio = bio;
 
 		if (bio->bi_rw & REQ_FLUSH) {
 			/* Also need to send a flush to the backing device */
@@ -1008,8 +1009,6 @@ static void request_write(struct cached_dev *dc, struct search *s)
 			flush->bi_private = cl;
 
 			closure_bio_submit(flush, cl, s->d);
-		} else {
-			s->op.cache_bio = bio;
 		}
 	}
 out:
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 26b14f9fcac..6bc9618af09 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -168,12 +168,25 @@ static inline int write_disable(struct m25p *flash)
  */
 static inline int set_4byte(struct m25p *flash, u32 jedec_id, int enable)
 {
+	int status;
+	bool need_wren = false;
+
 	switch (JEDEC_MFR(jedec_id)) {
-	case CFI_MFR_MACRONIX:
 	case CFI_MFR_ST: /* Micron, actually */
+		/* Some Micron need WREN command; all will accept it */
+		need_wren = true;
+	case CFI_MFR_MACRONIX:
 	case 0xEF /* winbond */:
+		if (need_wren)
+			write_enable(flash);
+
 		flash->command[0] = enable ? OPCODE_EN4B : OPCODE_EX4B;
-		return spi_write(flash->spi, flash->command, 1);
+		status = spi_write(flash->spi, flash->command, 1);
+
+		if (need_wren)
+			write_disable(flash);
+
+		return status;
 	default:
 		/* Spansion style */
 		flash->command[0] = OPCODE_BRWR;
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 7ed4841327f..d340b2f198c 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2869,10 +2869,8 @@ static int nand_flash_detect_ext_param_page(struct mtd_info *mtd,
 
 	len = le16_to_cpu(p->ext_param_page_length) * 16;
 	ep = kmalloc(len, GFP_KERNEL);
-	if (!ep) {
-		ret = -ENOMEM;
-		goto ext_out;
-	}
+	if (!ep)
+		return -ENOMEM;
 
 	/* Send our own NAND_CMD_PARAM. */
 	chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1);
@@ -2920,7 +2918,7 @@ static int nand_flash_detect_ext_param_page(struct mtd_info *mtd,
 	}
 
 	pr_info("ONFI extended param page detected.\n");
-	return 0;
+	ret = 0;
 
 ext_out:
 	kfree(ep);
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 8cd34bf644b..77df9cb0068 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -145,9 +145,11 @@ bool __init sclp_has_linemode(void)
 
 	if (sccb->header.response_code != 0x20)
 		return 0;
-	if (sccb->sclp_send_mask & (EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK))
-		return 1;
-	return 0;
+	if (!(sccb->sclp_send_mask & (EVTYP_OPCMD_MASK | EVTYP_PMSGCMD_MASK)))
+		return 0;
+	if (!(sccb->sclp_receive_mask & (EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK)))
+		return 0;
+	return 1;
 }
 
 bool __init sclp_has_vt220(void)
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index a0f47c83fd6..3f4ca4e09a4 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -810,7 +810,7 @@ static void tty3270_resize_work(struct work_struct *work)
 	struct winsize ws;
 
 	screen = tty3270_alloc_screen(tp->n_rows, tp->n_cols);
-	if (!screen)
+	if (IS_ERR(screen))
 		return;
 	/* Switch to new output size */
 	spin_lock_bh(&tp->view.lock);
diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index fd7cc566095..d4ac60b4a56 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -1583,7 +1583,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
 	/* Initialize the hardware */
 	ret = clk_prepare_enable(clk);
 	if (ret)
-		goto out_unmap_regs;
+		goto out_free_irq;
 	spi_writel(as, CR, SPI_BIT(SWRST));
 	spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */
 	if (as->caps.has_wdrbt) {
@@ -1614,6 +1614,7 @@ out_free_dma:
 	spi_writel(as, CR, SPI_BIT(SWRST));
 	spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */
 	clk_disable_unprepare(clk);
+out_free_irq:
 	free_irq(irq, master);
 out_unmap_regs:
 	iounmap(as->regs);
diff --git a/drivers/spi/spi-clps711x.c b/drivers/spi/spi-clps711x.c
index 5655acf55bf..6416798828e 100644
--- a/drivers/spi/spi-clps711x.c
+++ b/drivers/spi/spi-clps711x.c
@@ -226,7 +226,6 @@ static int spi_clps711x_probe(struct platform_device *pdev)
 			       dev_name(&pdev->dev), hw);
 	if (ret) {
 		dev_err(&pdev->dev, "Can't request IRQ\n");
-		clk_put(hw->spi_clk);
 		goto clk_out;
 	}
 
@@ -247,7 +246,6 @@ err_out:
 			gpio_free(hw->chipselect[i]);
 
 	spi_master_put(master);
-	kfree(master);
 
 	return ret;
 }
@@ -263,7 +261,6 @@ static int spi_clps711x_remove(struct platform_device *pdev)
 			gpio_free(hw->chipselect[i]);
 
 	spi_unregister_master(master);
-	kfree(master);
 
 	return 0;
 }
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index 6cd07d13eca..4e44575bd87 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -476,15 +476,9 @@ static int dspi_probe(struct platform_device *pdev)
 	master->bus_num = bus_num;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "can't get platform resource\n");
-		ret = -EINVAL;
-		goto out_master_put;
-	}
-
 	dspi->base = devm_ioremap_resource(&pdev->dev, res);
-	if (!dspi->base) {
-		ret = -EINVAL;
+	if (IS_ERR(dspi->base)) {
+		ret = PTR_ERR(dspi->base);
 		goto out_master_put;
 	}
 
diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c
index dbc5e999a1f..6adf4e35816 100644
--- a/drivers/spi/spi-mpc512x-psc.c
+++ b/drivers/spi/spi-mpc512x-psc.c
@@ -522,8 +522,10 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
 	psc_num = master->bus_num;
 	snprintf(clk_name, sizeof(clk_name), "psc%d_mclk", psc_num);
 	clk = devm_clk_get(dev, clk_name);
-	if (IS_ERR(clk))
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
 		goto free_irq;
+	}
 	ret = clk_prepare_enable(clk);
 	if (ret)
 		goto free_irq;
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 2eb06ee0b32..c1a50674c1e 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -546,8 +546,17 @@ static irqreturn_t ssp_int(int irq, void *dev_id)
 	if (pm_runtime_suspended(&drv_data->pdev->dev))
 		return IRQ_NONE;
 
-	sccr1_reg = read_SSCR1(reg);
+	/*
+	 * If the device is not yet in RPM suspended state and we get an
+	 * interrupt that is meant for another device, check if status bits
+	 * are all set to one. That means that the device is already
+	 * powered off.
+	 */
 	status = read_SSSR(reg);
+	if (status == ~0)
+		return IRQ_NONE;
+
+	sccr1_reg = read_SSCR1(reg);
 
 	/* Ignore possible writes if we don't need to write */
 	if (!(sccr1_reg & SSCR1_TIE))
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 512b8893893..a80376dc3a1 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -1428,6 +1428,8 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
 	       S3C64XX_SPI_INT_TX_OVERRUN_EN | S3C64XX_SPI_INT_TX_UNDERRUN_EN,
 	       sdd->regs + S3C64XX_SPI_INT_EN);
 
+	pm_runtime_enable(&pdev->dev);
+
 	if (spi_register_master(master)) {
 		dev_err(&pdev->dev, "cannot register SPI master\n");
 		ret = -EBUSY;
@@ -1440,8 +1442,6 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
 					mem_res,
 					sdd->rx_dma.dmach, sdd->tx_dma.dmach);
 
-	pm_runtime_enable(&pdev->dev);
-
 	return 0;
 
 err3:
diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c
index 0b68cb592fa..e488a90a98b 100644
--- a/drivers/spi/spi-sh-hspi.c
+++ b/drivers/spi/spi-sh-hspi.c
@@ -296,6 +296,8 @@ static int hspi_probe(struct platform_device *pdev)
 		goto error1;
 	}
 
+	pm_runtime_enable(&pdev->dev);
+
 	master->num_chipselect	= 1;
 	master->bus_num		= pdev->id;
 	master->setup		= hspi_setup;
@@ -309,8 +311,6 @@ static int hspi_probe(struct platform_device *pdev)
 		goto error1;
 	}
 
-	pm_runtime_enable(&pdev->dev);
-
 	return 0;
 
  error1:
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 5be5e3d14f7..19f3c3fc65f 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -802,6 +802,12 @@ static int hpwdt_init_one(struct pci_dev *dev,
 		return -ENODEV;
 	}
 
+	/*
+	 * Ignore all auxilary iLO devices with the following PCI ID
+	 */
+	if (dev->subsystem_device == 0x1979)
+		return -ENODEV;
+
 	if (pci_enable_device(dev)) {
 		dev_warn(&dev->dev,
 			"Not possible to enable PCI Device: 0x%x:0x%x.\n",
diff --git a/drivers/watchdog/kempld_wdt.c b/drivers/watchdog/kempld_wdt.c
index 491419e0772..5c3d4df63e6 100644
--- a/drivers/watchdog/kempld_wdt.c
+++ b/drivers/watchdog/kempld_wdt.c
@@ -35,7 +35,7 @@
 #define KEMPLD_WDT_STAGE_TIMEOUT(x)	(0x1b + (x) * 4)
 #define KEMPLD_WDT_STAGE_CFG(x)		(0x18 + (x))
 #define STAGE_CFG_GET_PRESCALER(x)	(((x) & 0x30) >> 4)
-#define STAGE_CFG_SET_PRESCALER(x)	(((x) & 0x30) << 4)
+#define STAGE_CFG_SET_PRESCALER(x)	(((x) & 0x3) << 4)
 #define STAGE_CFG_PRESCALER_MASK	0x30
 #define STAGE_CFG_ACTION_MASK		0x7
 #define STAGE_CFG_ASSERT		(1 << 3)
diff --git a/drivers/watchdog/sunxi_wdt.c b/drivers/watchdog/sunxi_wdt.c
index 1f94b42764a..f6caa77151c 100644
--- a/drivers/watchdog/sunxi_wdt.c
+++ b/drivers/watchdog/sunxi_wdt.c
@@ -146,7 +146,7 @@ static const struct watchdog_ops sunxi_wdt_ops = {
 	.set_timeout	= sunxi_wdt_set_timeout,
 };
 
-static int __init sunxi_wdt_probe(struct platform_device *pdev)
+static int sunxi_wdt_probe(struct platform_device *pdev)
 {
 	struct sunxi_wdt_dev *sunxi_wdt;
 	struct resource *res;
@@ -187,7 +187,7 @@ static int __init sunxi_wdt_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int __exit sunxi_wdt_remove(struct platform_device *pdev)
+static int sunxi_wdt_remove(struct platform_device *pdev)
 {
 	struct sunxi_wdt_dev *sunxi_wdt = platform_get_drvdata(pdev);
 
diff --git a/drivers/watchdog/ts72xx_wdt.c b/drivers/watchdog/ts72xx_wdt.c
index 42913f131dc..c9b0c627fe7 100644
--- a/drivers/watchdog/ts72xx_wdt.c
+++ b/drivers/watchdog/ts72xx_wdt.c
@@ -310,7 +310,8 @@ static long ts72xx_wdt_ioctl(struct file *file, unsigned int cmd,
 
 	case WDIOC_GETSTATUS:
 	case WDIOC_GETBOOTSTATUS:
-		return put_user(0, p);
+		error = put_user(0, p);
+		break;
 
 	case WDIOC_KEEPALIVE:
 		ts72xx_wdt_kick(wdt);