Merge branch 'linus' into cpus4096

Conflicts:

	arch/x86/xen/smp.c
	kernel/sched_rt.c
	net/iucv/iucv.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

78 files changed, 1025 insertions, 39605 deletions

diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 5ea3093bc40..90583d6a594 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -820,7 +820,7 @@ reschedule:
 }
 
 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
-		     u8 code1, u8 code2, u32 addr, u8 *data, int size)
+		     u8 code1, u8 code2, u32 addr, const u8 *data, int size)
 {
 	int ret;
 	u8 *buf;
diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c
index 5f71ff3aee3..cb01b5106ef 100644
--- a/drivers/usb/atm/ueagle-atm.c
+++ b/drivers/usb/atm/ueagle-atm.c
@@ -579,7 +579,7 @@ MODULE_PARM_DESC(annex,
  * uea_send_modem_cmd - Send a command for pre-firmware devices.
  */
 static int uea_send_modem_cmd(struct usb_device *usb,
-		u16 addr, u16 size, u8 * buff)
+			      u16 addr, u16 size, const u8 *buff)
 {
 	int ret = -ENOMEM;
 	u8 *xfer_buff;
@@ -604,7 +604,8 @@ static int uea_send_modem_cmd(struct usb_device *usb,
 static void uea_upload_pre_firmware(const struct firmware *fw_entry, void *context)
 {
 	struct usb_device *usb = context;
-	u8 *pfw, value;
+	const u8 *pfw;
+	u8 value;
 	u32 crc = 0;
 	int ret, size;
 
@@ -720,7 +721,7 @@ static int uea_load_firmware(struct usb_device *usb, unsigned int ver)
 /*
  * Make sure that the DSP code provided is safe to use.
  */
-static int check_dsp_e1(u8 *dsp, unsigned int len)
+static int check_dsp_e1(const u8 *dsp, unsigned int len)
 {
 	u8 pagecount, blockcount;
 	u16 blocksize;
@@ -771,7 +772,7 @@ static int check_dsp_e1(u8 *dsp, unsigned int len)
 	return 0;
 }
 
-static int check_dsp_e4(u8 *dsp, int len)
+static int check_dsp_e4(const u8 *dsp, int len)
 {
 	int i;
 	struct l1_code *p = (struct l1_code *) dsp;
@@ -819,7 +820,7 @@ static int check_dsp_e4(u8 *dsp, int len)
 /*
  * send data to the idma pipe
  * */
-static int uea_idma_write(struct uea_softc *sc, void *data, u32 size)
+static int uea_idma_write(struct uea_softc *sc, const void *data, u32 size)
 {
 	int ret = -ENOMEM;
 	u8 *xfer_buff;
@@ -903,7 +904,7 @@ static void uea_load_page_e1(struct work_struct *work)
 	u16 ovl = sc->ovl;
 	struct block_info_e1 bi;
 
-	u8 *p;
+	const u8 *p;
 	u8 pagecount, blockcount;
 	u16 blockaddr, blocksize;
 	u32 pageoffset;
@@ -986,7 +987,7 @@ static void __uea_load_page_e4(struct uea_softc *sc, u8 pageno, int boot)
 	bi.wReserved = cpu_to_be16(UEA_RESERVED);
 
 	do {
-		u8 *blockoffset;
+		const u8 *blockoffset;
 		unsigned int blocksize;
 
 		blockidx = &p->page_header[blockno];
@@ -1095,7 +1096,7 @@ static inline int wait_cmv_ack(struct uea_softc *sc)
 #define UCDC_SEND_ENCAPSULATED_COMMAND 0x00
 
 static int uea_request(struct uea_softc *sc,
-		u16 value, u16 index, u16 size, void *data)
+		u16 value, u16 index, u16 size, const void *data)
 {
 	u8 *xfer_buff;
 	int ret = -ENOMEM;
@@ -1891,7 +1892,8 @@ static int load_XILINX_firmware(struct uea_softc *sc)
 {
 	const struct firmware *fw_entry;
 	int ret, size, u, ln;
-	u8 *pfw, value;
+	const u8 *pfw;
+	u8 value;
 	char *fw_name = FW_DIR "930-fpga.bin";
 
 	uea_enters(INS_TO_USBDEV(sc));
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index de17738f3ac..9218cca2104 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -565,6 +565,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
 	struct dev_state *ps;
 	int ret;
 
+	lock_kernel();
 	/* Protect against simultaneous removal or release */
 	mutex_lock(&usbfs_mutex);
 
@@ -611,6 +612,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
 	if (ret)
 		kfree(ps);
 	mutex_unlock(&usbfs_mutex);
+	unlock_kernel();
 	return ret;
 }
 
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 8133c99c6c5..c6a95395e52 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/rwsem.h>
+#include <linux/smp_lock.h>
 #include <linux/usb.h>
 
 #include "usb.h"
@@ -33,6 +34,7 @@ static int usb_open(struct inode * inode, struct file * file)
 	int err = -ENODEV;
 	const struct file_operations *old_fops, *new_fops = NULL;
 
+	lock_kernel();
 	down_read(&minor_rwsem);
 	c = usb_minors[minor];
 
@@ -51,6 +53,7 @@ static int usb_open(struct inode * inode, struct file * file)
 	fops_put(old_fops);
  done:
 	up_read(&minor_rwsem);
+	unlock_kernel();
 	return err;
 }
 
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 7158dbb6e4b..42a436478b7 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -924,6 +924,15 @@ static int register_root_hub(struct usb_hcd *hcd)
 	return retval;
 }
 
+void usb_enable_root_hub_irq (struct usb_bus *bus)
+{
+	struct usb_hcd *hcd;
+
+	hcd = container_of (bus, struct usb_hcd, self);
+	if (hcd->driver->hub_irq_enable && hcd->state != HC_STATE_HALT)
+		hcd->driver->hub_irq_enable (hcd);
+}
+
 
 /*-------------------------------------------------------------------------*/
 
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index a0bf5df6cb6..b9de1569b39 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -210,6 +210,8 @@ struct hc_driver {
 	int	(*bus_suspend)(struct usb_hcd *);
 	int	(*bus_resume)(struct usb_hcd *);
 	int	(*start_port_reset)(struct usb_hcd *, unsigned port_num);
+	void	(*hub_irq_enable)(struct usb_hcd *);
+		/* Needed only if port-change IRQs are level-triggered */
 
 		/* force handover of high-speed port to full-speed companion */
 	void	(*relinquish_port)(struct usb_hcd *, int);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 512d2d57d41..4cfe32a16c3 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2073,6 +2073,8 @@ int usb_port_resume(struct usb_device *udev)
 	}
 
 	clear_bit(port1, hub->busy_bits);
+	if (!hub->hdev->parent && !hub->busy_bits[0])
+		usb_enable_root_hub_irq(hub->hdev->bus);
 
 	if (status == 0)
 		status = finish_port_resume(udev);
@@ -3002,6 +3004,11 @@ static void hub_events(void)
 
 		hub->activating = 0;
 
+		/* If this is a root hub, tell the HCD it's okay to
+		 * re-enable port-change interrupts now. */
+		if (!hdev->parent && !hub->busy_bits[0])
+			usb_enable_root_hub_irq(hdev->bus);
+
 loop_autopm:
 		/* Allow autosuspend if we're not going to run again */
 		if (list_empty(&hub->event_list))
@@ -3227,6 +3234,8 @@ int usb_reset_device(struct usb_device *udev)
 			break;
 	}
 	clear_bit(port1, parent_hub->busy_bits);
+	if (!parent_hdev->parent && !parent_hub->busy_bits[0])
+		usb_enable_root_hub_irq(parent_hdev->bus);
 
 	if (ret < 0)
 		goto re_enumerate;
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 6e784d2db42..d6bab0d5f45 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -118,10 +118,10 @@ config USB_AMD5536UDC
 config USB_GADGET_ATMEL_USBA
 	boolean "Atmel USBA"
 	select USB_GADGET_DUALSPEED
-	depends on AVR32 || ARCH_AT91CAP9
+	depends on AVR32 || ARCH_AT91CAP9 || ARCH_AT91SAM9RL
 	help
 	  USBA is the integrated high-speed USB Device controller on
-	  the AT32AP700x and AT91CAP9 processors from Atmel.
+	  the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
 
 config USB_ATMEL_USBA
 	tristate
@@ -172,7 +172,7 @@ config USB_NET2280
 	default USB_GADGET
 	select USB_GADGET_SELECTED
 
-config USB_GADGET_PXA2XX
+config USB_GADGET_PXA25X
 	boolean "PXA 25x or IXP 4xx"
 	depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
 	help
@@ -184,19 +184,19 @@ config USB_GADGET_PXA2XX
 	   zero (for control transfers).
 
 	   Say "y" to link the driver statically, or "m" to build a
-	   dynamically linked module called "pxa2xx_udc" and force all
+	   dynamically linked module called "pxa25x_udc" and force all
 	   gadget drivers to also be dynamically linked.
 
-config USB_PXA2XX
+config USB_PXA25X
 	tristate
-	depends on USB_GADGET_PXA2XX
+	depends on USB_GADGET_PXA25X
 	default USB_GADGET
 	select USB_GADGET_SELECTED
 
 # if there's only one gadget driver, using only two bulk endpoints,
 # don't waste memory for the other endpoints
-config USB_PXA2XX_SMALL
-	depends on USB_GADGET_PXA2XX
+config USB_PXA25X_SMALL
+	depends on USB_GADGET_PXA25X
 	bool
 	default n if USB_ETH_RNDIS
 	default y if USB_ZERO
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 12357255d74..e258afd25fa 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -8,7 +8,7 @@ endif
 obj-$(CONFIG_USB_DUMMY_HCD)	+= dummy_hcd.o
 obj-$(CONFIG_USB_NET2280)	+= net2280.o
 obj-$(CONFIG_USB_AMD5536UDC)	+= amd5536udc.o
-obj-$(CONFIG_USB_PXA2XX)	+= pxa2xx_udc.o
+obj-$(CONFIG_USB_PXA25X)	+= pxa25x_udc.o
 obj-$(CONFIG_USB_PXA27X)	+= pxa27x_udc.o
 obj-$(CONFIG_USB_GOKU)		+= goku_udc.o
 obj-$(CONFIG_USB_OMAP)		+= omap_udc.o
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index 274c60a970c..b6b2a0a5ba3 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -888,7 +888,7 @@ static void pullup(struct at91_udc *udc, int is_on)
 		at91_udp_write(udc, AT91_UDP_TXVC, 0);
 		if (cpu_is_at91rm9200())
 			gpio_set_value(udc->board.pullup_pin, active);
-		else if (cpu_is_at91sam9260() || cpu_is_at91sam9263()) {
+		else if (cpu_is_at91sam9260() || cpu_is_at91sam9263() || cpu_is_at91sam9g20()) {
 			u32	txvc = at91_udp_read(udc, AT91_UDP_TXVC);
 
 			txvc |= AT91_UDP_TXVC_PUON;
@@ -906,7 +906,7 @@ static void pullup(struct at91_udc *udc, int is_on)
 		at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS);
 		if (cpu_is_at91rm9200())
 			gpio_set_value(udc->board.pullup_pin, !active);
-		else if (cpu_is_at91sam9260() || cpu_is_at91sam9263()) {
+		else if (cpu_is_at91sam9260() || cpu_is_at91sam9263() || cpu_is_at91sam9g20()) {
 			u32	txvc = at91_udp_read(udc, AT91_UDP_TXVC);
 
 			txvc &= ~AT91_UDP_TXVC_PUON;
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 8d61ea67a81..4ce3950b997 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -262,7 +262,7 @@ MODULE_PARM_DESC(host_addr, "Host Ethernet Address");
 /* For CDC-incapable hardware, choose the simple cdc subset.
  * Anything that talks bulk (without notable bugs) can do this.
  */
-#ifdef CONFIG_USB_GADGET_PXA2XX
+#ifdef CONFIG_USB_GADGET_PXA25X
 #define	DEV_CONFIG_SUBSET
 #endif
 
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index f7f159c1002..ca5149ea731 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -29,8 +29,8 @@
 #define	gadget_is_dummy(g)	0
 #endif
 
-#ifdef CONFIG_USB_GADGET_PXA2XX
-#define	gadget_is_pxa(g)	!strcmp("pxa2xx_udc", (g)->name)
+#ifdef CONFIG_USB_GADGET_PXA25X
+#define	gadget_is_pxa(g)	!strcmp("pxa25x_udc", (g)->name)
 #else
 #define	gadget_is_pxa(g)	0
 #endif
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 69b0a2754f2..f132a9219e1 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1501,7 +1501,7 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
 		}
 		break;
 
-#ifndef	CONFIG_USB_GADGET_PXA2XX
+#ifndef	CONFIG_USB_GADGET_PXA25X
 	/* PXA automagically handles this request too */
 	case USB_REQ_GET_CONFIGURATION:
 		if (ctrl->bRequestType != 0x80)
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 881d74c3d96..03a7f49d207 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -135,13 +135,17 @@ static void use_ep(struct omap_ep *ep, u16 select)
 
 	if (ep->bEndpointAddress & USB_DIR_IN)
 		num |= UDC_EP_DIR;
-	UDC_EP_NUM_REG = num | select;
+	omap_writew(num | select, UDC_EP_NUM);
 	/* when select, MUST deselect later !! */
 }
 
 static inline void deselect_ep(void)
 {
-	UDC_EP_NUM_REG &= ~UDC_EP_SEL;
+	u16 w;
+
+	w = omap_readw(UDC_EP_NUM);
+	w &= ~UDC_EP_SEL;
+	omap_writew(w, UDC_EP_NUM);
 	/* 6 wait states before TX will happen */
 }
 
@@ -216,7 +220,7 @@ static int omap_ep_enable(struct usb_ep *_ep,
 	ep->has_dma = 0;
 	ep->lch = -1;
 	use_ep(ep, UDC_EP_SEL);
-	UDC_CTRL_REG = udc->clr_halt;
+	omap_writew(udc->clr_halt, UDC_CTRL);
 	ep->ackwait = 0;
 	deselect_ep();
 
@@ -232,7 +236,7 @@ static int omap_ep_enable(struct usb_ep *_ep,
 	if (desc->bmAttributes != USB_ENDPOINT_XFER_ISOC
 			&& !ep->has_dma
 			&& !(ep->bEndpointAddress & USB_DIR_IN)) {
-		UDC_CTRL_REG = UDC_SET_FIFO_EN;
+		omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
 		ep->ackwait = 1 + ep->double_buf;
 	}
 
@@ -259,7 +263,7 @@ static int omap_ep_disable(struct usb_ep *_ep)
 	nuke (ep, -ESHUTDOWN);
 	ep->ep.maxpacket = ep->maxpacket;
 	ep->has_dma = 0;
-	UDC_CTRL_REG = UDC_SET_HALT;
+	omap_writew(UDC_SET_HALT, UDC_CTRL);
 	list_del_init(&ep->iso);
 	del_timer(&ep->timer);
 
@@ -360,13 +364,13 @@ write_packet(u8 *buf, struct omap_req *req, unsigned max)
 	if (likely((((int)buf) & 1) == 0)) {
 		wp = (u16 *)buf;
 		while (max >= 2) {
-			UDC_DATA_REG = *wp++;
+			omap_writew(*wp++, UDC_DATA);
 			max -= 2;
 		}
 		buf = (u8 *)wp;
 	}
 	while (max--)
-		*(volatile u8 *)&UDC_DATA_REG = *buf++;
+		omap_writeb(*buf++, UDC_DATA);
 	return len;
 }
 
@@ -385,13 +389,13 @@ static int write_fifo(struct omap_ep *ep, struct omap_req