diff options
| author | Chuansheng Liu <chuansheng.liu@intel.com> | 2012-09-11 16:00:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-10 20:22:35 -0700 |
| commit | 73d4066055e0e2830533041f4b91df8e6e5976ff (patch) | |
| tree | ac6d996069c1c0afc65abe0404427d6ffbfa5fb5 /drivers/usb/core | |
| parent | ca3c1539adfe9c1b86f16faf314b3bf54c3b5389 (diff) | |
USB/host: Cleanup unneccessary irq disable code
Because the IRQF_DISABLED as the flag is now a NOOP and has been
deprecated and in hardirq context the interrupt is disabled.
so in usb/host code:
Removing the usage of flag IRQF_DISABLED;
Removing the calling local_irq save/restore actions in irq
handler usb_hcd_irq();
Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/hcd.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 6e4fd28bc24..35b52f6e1c5 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2153,15 +2153,8 @@ EXPORT_SYMBOL_GPL(usb_bus_start_enum); irqreturn_t usb_hcd_irq (int irq, void *__hcd) { struct usb_hcd *hcd = __hcd; - unsigned long flags; irqreturn_t rc; - /* IRQF_DISABLED doesn't work correctly with shared IRQs - * when the first handler doesn't use it. So let's just - * assume it's never used. - */ - local_irq_save(flags); - if (unlikely(HCD_DEAD(hcd) || !HCD_HW_ACCESSIBLE(hcd))) rc = IRQ_NONE; else if (hcd->driver->irq(hcd) == IRQ_NONE) @@ -2169,7 +2162,6 @@ irqreturn_t usb_hcd_irq (int irq, void *__hcd) else rc = IRQ_HANDLED; - local_irq_restore(flags); return rc; } EXPORT_SYMBOL_GPL(usb_hcd_irq); @@ -2357,14 +2349,6 @@ static int usb_hcd_request_irqs(struct usb_hcd *hcd, int retval; if (hcd->driver->irq) { - - /* IRQF_DISABLED doesn't work as advertised when used together - * with IRQF_SHARED. As usb_hcd_irq() will always disable - * interrupts we can remove it here. - */ - if (irqflags & IRQF_SHARED) - irqflags &= ~IRQF_DISABLED; - snprintf(hcd->irq_descr, sizeof(hcd->irq_descr), "%s:usb%d", hcd->driver->description, hcd->self.busnum); retval = request_irq(irqnum, &usb_hcd_irq, irqflags, |