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-rw-r--r--drivers/usb/host/ohci-au1xxx.c5
-rw-r--r--drivers/usb/host/ohci-dbg.c18
-rw-r--r--drivers/usb/host/ohci-ep93xx.c2
-rw-r--r--drivers/usb/host/ohci-hcd.c26
-rw-r--r--drivers/usb/host/ohci-hub.c7
-rw-r--r--drivers/usb/host/ohci-omap.c1
-rw-r--r--drivers/usb/host/ohci-pci.c5
-rw-r--r--drivers/usb/host/ohci-pxa27x.c2
-rw-r--r--drivers/usb/host/ohci-q.c8
-rw-r--r--drivers/usb/host/ohci-sh.c1
-rw-r--r--drivers/usb/host/ohci-sm501.c1
-rw-r--r--drivers/usb/host/ohci-spear.c1
-rw-r--r--drivers/usb/host/ohci-tmio.c3
-rw-r--r--drivers/usb/host/ohci.h14
14 files changed, 45 insertions, 49 deletions
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c
index 9b66df8278f..40d886adff5 100644
--- a/drivers/usb/host/ohci-au1xxx.c
+++ b/drivers/usb/host/ohci-au1xxx.c
@@ -173,12 +173,9 @@ static int ohci_hcd_au1xxx_drv_suspend(struct device *dev)
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
- *
- * This is still racy as hcd->state is manipulated outside of
- * any locks =P But that will be a different fix.
*/
spin_lock_irqsave(&ohci->lock, flags);
- if (hcd->state != HC_STATE_SUSPENDED) {
+ if (ohci->rh_state != OHCI_RH_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c
index d7d34492934..5179fcd73d8 100644
--- a/drivers/usb/host/ohci-dbg.c
+++ b/drivers/usb/host/ohci-dbg.c
@@ -127,6 +127,19 @@ static char *hcfs2string (int state)
return "?";
}
+static const char *rh_state_string(struct ohci_hcd *ohci)
+{
+ switch (ohci->rh_state) {
+ case OHCI_RH_HALTED:
+ return "halted";
+ case OHCI_RH_SUSPENDED:
+ return "suspended";
+ case OHCI_RH_RUNNING:
+ return "running";
+ }
+ return "?";
+}
+
// dump control and status registers
static void
ohci_dump_status (struct ohci_hcd *controller, char **next, unsigned *size)
@@ -136,9 +149,10 @@ ohci_dump_status (struct ohci_hcd *controller, char **next, unsigned *size)
temp = ohci_readl (controller, &regs->revision) & 0xff;
ohci_dbg_sw (controller, next, size,
- "OHCI %d.%d, %s legacy support registers\n",
+ "OHCI %d.%d, %s legacy support registers, rh state %s\n",
0x03 & (temp >> 4), (temp & 0x0f),
- (temp & 0x0100) ? "with" : "NO");
+ (temp & 0x0100) ? "with" : "NO",
+ rh_state_string(controller));
temp = ohci_readl (controller, &regs->control);
ohci_dbg_sw (controller, next, size,
diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c
index dc45d489d00..3d63574d2c7 100644
--- a/drivers/usb/host/ohci-ep93xx.c
+++ b/drivers/usb/host/ohci-ep93xx.c
@@ -179,8 +179,6 @@ static int ohci_hcd_ep93xx_drv_suspend(struct platform_device *pdev, pm_message_
ohci->next_statechange = jiffies;
ep93xx_stop_hc(&pdev->dev);
- hcd->state = HC_STATE_SUSPENDED;
-
return 0;
}
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 34efd479e06..03c4631dc27 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -209,7 +209,7 @@ static int ohci_urb_enqueue (
retval = -ENODEV;
goto fail;
}
- if (!HC_IS_RUNNING(hcd->state)) {
+ if (ohci->rh_state != OHCI_RH_RUNNING) {
retval = -ENODEV;
goto fail;
}
@@ -274,7 +274,7 @@ static int ohci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
rc = usb_hcd_check_unlink_urb(hcd, urb, status);
if (rc) {
; /* Do nothing */
- } else if (HC_IS_RUNNING(hcd->state)) {
+ } else if (ohci->rh_state == OHCI_RH_RUNNING) {
urb_priv_t *urb_priv;
/* Unless an IRQ completed the unlink while it was being
@@ -321,7 +321,7 @@ ohci_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep)
rescan:
spin_lock_irqsave (&ohci->lock, flags);
- if (!HC_IS_RUNNING (hcd->state)) {
+ if (ohci->rh_state != OHCI_RH_RUNNING) {
sanitize:
ed->state = ED_IDLE;
if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT)
@@ -377,6 +377,7 @@ static void ohci_usb_reset (struct ohci_hcd *ohci)
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
ohci->hc_control &= OHCI_CTRL_RWC;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
+ ohci->rh_state = OHCI_RH_HALTED;
}
/* ohci_shutdown forcibly disables IRQs and DMA, helping kexec and
@@ -503,7 +504,7 @@ static int ohci_init (struct ohci_hcd *ohci)
if (distrust_firmware)
ohci->flags |= OHCI_QUIRK_HUB_POWER;
- disable (ohci);
+ ohci->rh_state = OHCI_RH_HALTED;
ohci->regs = hcd->regs;
/* REVISIT this BIOS handshake is now moved into PCI "quirks", and
@@ -578,7 +579,7 @@ static int ohci_run (struct ohci_hcd *ohci)
int first = ohci->fminterval == 0;
struct usb_hcd *hcd = ohci_to_hcd(ohci);
- disable (ohci);
+ ohci->rh_state = OHCI_RH_HALTED;
/* boot firmware should have set this up (5.1.1.3.1) */
if (first) {
@@ -691,7 +692,7 @@ retry:
ohci->hc_control &= OHCI_CTRL_RWC;
ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
- hcd->state = HC_STATE_RUNNING;
+ ohci->rh_state = OHCI_RH_RUNNING;
/* wake on ConnectStatusChange, matching external hubs */
ohci_writel (ohci, RH_HS_DRWE, &ohci->regs->roothub.status);
@@ -728,7 +729,6 @@ retry:
// POTPGT delay is bits 24-31, in 2 ms units.
mdelay ((val >> 23) & 0x1fe);
- hcd->state = HC_STATE_RUNNING;
if (quirk_zfmicro(ohci)) {
/* Create timer to watch for bad queue state on ZF Micro */
@@ -764,7 +764,7 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd)
* of dead, unclocked, or unplugged (CardBus...) devices
*/
if (ints == ~(u32)0) {
- disable (ohci);
+ ohci->rh_state = OHCI_RH_HALTED;
ohci_dbg (ohci, "device removed!\n");
usb_hc_died(hcd);
return IRQ_HANDLED;
@@ -774,7 +774,7 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd)
ints &= ohci_readl(ohci, &regs->intrenable);
/* interrupt for some other device? */
- if (ints == 0 || unlikely(hcd->state == HC_STATE_HALT))
+ if (ints == 0 || unlikely(ohci->rh_state == OHCI_RH_HALTED))
return IRQ_NOTMINE;
if (ints & OHCI_INTR_UE) {
@@ -789,8 +789,8 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd)
schedule_work (&ohci->nec_work);
} else {
- disable (ohci);
ohci_err (ohci, "OHCI Unrecoverable Error, disabled\n");
+ ohci->rh_state = OHCI_RH_HALTED;
usb_hc_died(hcd);
}
@@ -874,11 +874,11 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd)
if ((ints & OHCI_INTR_SF) != 0
&& !ohci->ed_rm_list
&& !ohci->ed_to_check
- && HC_IS_RUNNING(hcd->state))
+ && ohci->rh_state == OHCI_RH_RUNNING)
ohci_writel (ohci, OHCI_INTR_SF, &regs->intrdisable);
spin_unlock (&ohci->lock);
- if (HC_IS_RUNNING(hcd->state)) {
+ if (ohci->rh_state == OHCI_RH_RUNNING) {
ohci_writel (ohci, ints, &regs->intrstatus);
ohci_writel (ohci, OHCI_INTR_MIE, &regs->intrenable);
// flush those writes
@@ -932,7 +932,7 @@ static int ohci_restart (struct ohci_hcd *ohci)
struct urb_priv *priv;
spin_lock_irq(&ohci->lock);
- disable (ohci);
+ ohci->rh_state = OHCI_RH_HALTED;
/* Recycle any "live" eds/tds (and urbs). */
if (!list_empty (&ohci->pending))
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index 2f00040fc40..836772dfabd 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -111,6 +111,7 @@ __acquires(ohci->lock)
if (!autostop) {
ohci->next_statechange = jiffies + msecs_to_jiffies (5);
ohci->autostop = 0;
+ ohci->rh_state = OHCI_RH_SUSPENDED;
}
done:
@@ -140,7 +141,7 @@ __acquires(ohci->lock)
if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
/* this can happen after resuming a swsusp snapshot */
- if (hcd->state == HC_STATE_RESUMING) {
+ if (ohci->rh_state != OHCI_RH_RUNNING) {
ohci_dbg (ohci, "BIOS/SMM active, control %03x\n",
ohci->hc_control);
status = -EBUSY;
@@ -274,6 +275,7 @@ skip_resume:
(void) ohci_readl (ohci, &ohci->regs->control);
}
+ ohci->rh_state = OHCI_RH_RUNNING;
return 0;
}
@@ -336,11 +338,8 @@ static void ohci_finish_controller_resume(struct usb_hcd *hcd)
/* If needed, reinitialize and suspend the root hub */
if (need_reinit) {
spin_lock_irq(&ohci->lock);
- hcd->state = HC_STATE_RESUMING;
ohci_rh_resume(ohci);
- hcd->state = HC_STATE_QUIESCING;
ohci_rh_suspend(ohci, 0);
- hcd->state = HC_STATE_SUSPENDED;
spin_unlock_irq(&ohci->lock);
}
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index e4b8782cc6e..db3968656d2 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -516,7 +516,6 @@ static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
ohci->next_statechange = jiffies;
omap_ohci_clock_power(0);
- ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
return 0;
}
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index ad8166c681e..847187df50a 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -334,12 +334,9 @@ static int ohci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
- *
- * This is still racy as hcd->state is manipulated outside of
- * any locks =P But that will be a different fix.
*/
spin_lock_irqsave (&ohci->lock, flags);
- if (hcd->state != HC_STATE_SUSPENDED) {
+ if (ohci->rh_state != OHCI_RH_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 29dfefe1c72..6313e4439f3 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -502,8 +502,6 @@ static int ohci_hcd_pxa27x_drv_suspend(struct device *dev)
ohci->ohci.next_statechange = jiffies;
pxa27x_stop_hc(ohci, dev);
- hcd->state = HC_STATE_SUSPENDED;
-
return 0;
}
diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
index 15dc51ded61..c5a1ea9145f 100644
--- a/drivers/usb/host/ohci-q.c
+++ b/drivers/usb/host/ohci-q.c
@@ -912,7 +912,7 @@ rescan_all:
/* only take off EDs that the HC isn't using, accounting for
* frame counter wraps and EDs with partially retired TDs
*/
- if (likely (HC_IS_RUNNING(ohci_to_hcd(ohci)->state))) {
+ if (likely(ohci->rh_state == OHCI_RH_RUNNING)) {
if (tick_before (tick, ed->tick)) {
skip_ed:
last = &ed->ed_next;
@@ -1012,7 +1012,7 @@ rescan_this:
/* but if there's work queued, reschedule */
if (!list_empty (&ed->td_list)) {
- if (HC_IS_RUNNING(ohci_to_hcd(ohci)->state))
+ if (ohci->rh_state == OHCI_RH_RUNNING)
ed_schedule (ohci, ed);
}
@@ -1021,9 +1021,7 @@ rescan_this:
}
/* maybe reenable control and bulk lists */
- if (HC_IS_RUNNING(ohci_to_hcd(ohci)->state)
- && ohci_to_hcd(ohci)->state != HC_STATE_QUIESCING
- && !ohci->ed_rm_list) {
+ if (ohci->rh_state == OHCI_RH_RUNNING && !ohci->ed_rm_list) {
u32 command = 0, control = 0;
if (ohci->ed_controltail) {
diff --git a/drivers/usb/host/ohci-sh.c b/drivers/usb/host/ohci-sh.c
index afc4eb6bb9d..84686d90805 100644
--- a/drivers/usb/host/ohci-sh.c
+++ b/drivers/usb/host/ohci-sh.c
@@ -29,7 +29,6 @@ static int ohci_sh_start(struct usb_hcd *hcd)
ohci_hcd_init(ohci);
ohci_init(ohci);
ohci_run(ohci);
- hcd->state = HC_STATE_RUNNING;
return 0;
}
diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
index 968cea2b6d4..5596ac2ba1c 100644
--- a/drivers/usb/host/ohci-sm501.c
+++ b/drivers/usb/host/ohci-sm501.c
@@ -224,7 +224,6 @@ static int ohci_sm501_suspend(struct platform_device *pdev, pm_message_t msg)
ohci->next_statechange = jiffies;
sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 0);
- ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
return 0;
}
diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c
index 69874654f3b..95c16489e88 100644
--- a/drivers/usb/host/ohci-spear.c
+++ b/drivers/usb/host/ohci-spear.c
@@ -203,7 +203,6 @@ static int spear_ohci_hcd_drv_suspend(struct platform_device *dev,
ohci->next_statechange = jiffies;
spear_stop_ohci(ohci_p);
- ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
return 0;
}
diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
index 06331d93117..120bfe6ede3 100644
--- a/drivers/usb/host/ohci-tmio.c
+++ b/drivers/usb/host/ohci-tmio.c
@@ -318,9 +318,6 @@ static int ohci_hcd_tmio_drv_suspend(struct platform_device *dev, pm_message_t s
if (ret)
return ret;
}
-
- hcd->state = HC_STATE_SUSPENDED;
-
return 0;
}
diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index 35e5fd640ce..3a978a2130c 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -344,6 +344,12 @@ typedef struct urb_priv {
* a subset of what the full implementation needs. (Linus)
*/
+enum ohci_rh_state {
+ OHCI_RH_HALTED,
+ OHCI_RH_SUSPENDED,
+ OHCI_RH_RUNNING
+};
+
struct ohci_hcd {
spinlock_t lock;
@@ -384,6 +390,7 @@ struct ohci_hcd {
/*
* driver state
*/
+ enum ohci_rh_state rh_state;
int num_ports;
int load [NUM_INTS];
u32 hc_control; /* copy of hc control reg */
@@ -680,11 +687,6 @@ static inline u16 ohci_hwPSW(const struct ohci_hcd *ohci,
/*-------------------------------------------------------------------------*/
-static inline void disable (struct ohci_hcd *ohci)
-{
- ohci_to_hcd(ohci)->state = HC_STATE_HALT;
-}
-
#define FI 0x2edf /* 12000 bits per frame (-1) */
#define FSMP(fi) (0x7fff & ((6 * ((fi) - 210)) / 7))
#define FIT (1 << 31)
@@ -708,7 +710,7 @@ static inline void periodic_reinit (struct ohci_hcd *ohci)
#define read_roothub(hc, register, mask) ({ \
u32 temp = ohci_readl (hc, &hc->regs->roothub.register); \
if (temp == -1) \
- disable (hc); \
+ hc->rh_state = OHCI_RH_HALTED; \
else if (hc->flags & OHCI_QUIRK_AMD756) \
while (temp & mask) \
temp = ohci_readl (hc, &hc->regs->roothub.register); \
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-16 20:35:53 +0000