Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=442258e2ff69276ff767f3703b30ce6a31fdd181
Commit: 442258e2ff69276ff767f3703b30ce6a31fdd181
Parent: d48bd977e0dd8c17081d12242bfc09d743ea0d26
Author: Alan Stern <[EMAIL PROTECTED]>
AuthorDate: Thu Dec 6 14:47:08 2007 -0500
Committer: Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Mon Dec 17 10:47:15 2007 -0800
USB: use IRQF_DISABLED for HCD interrupt handlers
Host controller IRQs are supposed to be serviced with interrupts
disabled. This patch (as1026) adds an IRQF_DISABLED flag to all the
controller drivers that lack it. It also replaces the
spin_lock_irqsave() and spin_unlock_irqrestore() calls in uhci_irq()
with simple spin_lock() and spin_unlock().
This fixes Bugzilla #9335.
Signed-off-by: Alan Stern <[EMAIL PROTECTED]>
Acked-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/core/hcd-pci.c | 2 +-
drivers/usb/host/ehci-fsl.c | 2 +-
drivers/usb/host/ohci-ppc-of.c | 2 +-
drivers/usb/host/ohci-ssb.c | 2 +-
drivers/usb/host/r8a66597-hcd.c | 2 +-
drivers/usb/host/uhci-hcd.c | 9 ++++-----
6 files changed, 9 insertions(+), 10 deletions(-)
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 5cf6d5f..3fb9af8 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -125,7 +125,7 @@ int usb_hcd_pci_probe (struct pci_dev *dev, const struct
pci_device_id *id)
pci_set_master (dev);
- retval = usb_add_hcd (hcd, dev->irq, IRQF_SHARED);
+ retval = usb_add_hcd(hcd, dev->irq, IRQF_DISABLED | IRQF_SHARED);
if (retval != 0)
goto err4;
return retval;
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index b7b7bfb..430821c 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -122,7 +122,7 @@ int usb_hcd_fsl_probe(const struct hc_driver *driver,
temp = in_le32(hcd->regs + 0x1a8);
out_le32(hcd->regs + 0x1a8, temp | 0x3);
- retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
if (retval != 0)
goto err4;
return retval;
diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
index 0a74269..0c3e6b7 100644
--- a/drivers/usb/host/ohci-ppc-of.c
+++ b/drivers/usb/host/ohci-ppc-of.c
@@ -142,7 +142,7 @@ ohci_hcd_ppc_of_probe(struct of_device *op, const struct
of_device_id *match)
ohci_hcd_init(ohci);
- rv = usb_add_hcd(hcd, irq, 0);
+ rv = usb_add_hcd(hcd, irq, IRQF_DISABLED);
if (rv == 0)
return 0;
diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c
index fe70e72..6e9c2d6 100644
--- a/drivers/usb/host/ohci-ssb.c
+++ b/drivers/usb/host/ohci-ssb.c
@@ -160,7 +160,7 @@ static int ssb_ohci_attach(struct ssb_device *dev)
hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs)
goto err_put_hcd;
- err = usb_add_hcd(hcd, dev->irq, IRQF_SHARED);
+ err = usb_add_hcd(hcd, dev->irq, IRQF_DISABLED | IRQF_SHARED);
if (err)
goto err_iounmap;
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index ae8ec44..0ce2fc5 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -2197,7 +2197,7 @@ static int __init r8a66597_probe(struct platform_device
*pdev)
INIT_LIST_HEAD(&r8a66597->child_device);
hcd->rsrc_start = res->start;
- ret = usb_add_hcd(hcd, irq, 0);
+ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
if (ret != 0) {
err("Failed to add hcd");
goto clean_up;
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index 4db17f7..ec98789 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -378,7 +378,6 @@ static irqreturn_t uhci_irq(struct usb_hcd *hcd)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
unsigned short status;
- unsigned long flags;
/*
* Read the interrupt status, and write it back to clear the
@@ -398,7 +397,7 @@ static irqreturn_t uhci_irq(struct usb_hcd *hcd)
dev_err(uhci_dev(uhci), "host controller process "
"error, something bad happened!\n");
if (status & USBSTS_HCH) {
- spin_lock_irqsave(&uhci->lock, flags);
+ spin_lock(&uhci->lock);
if (uhci->rh_state >= UHCI_RH_RUNNING) {
dev_err(uhci_dev(uhci),
"host controller halted, "
@@ -415,16 +414,16 @@ static irqreturn_t uhci_irq(struct usb_hcd *hcd)
* pending unlinks */
mod_timer(&hcd->rh_timer, jiffies);
}
- spin_unlock_irqrestore(&uhci->lock, flags);
+ spin_unlock(&uhci->lock);
}
}
if (status & USBSTS_RD)
usb_hcd_poll_rh_status(hcd);
else {
- spin_lock_irqsave(&uhci->lock, flags);
+ spin_lock(&uhci->lock);
uhci_scan_schedule(uhci);
- spin_unlock_irqrestore(&uhci->lock, flags);
+ spin_unlock(&uhci->lock);
}
return IRQ_HANDLED;
-
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