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USB: xHCI: Supporting MSI/MSI-X

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Enable MSI/MSI-X supporting in xhci driver.

Provide the mechanism to fall back using MSI and Legacy IRQs
if MSI-X IRQs register failed.

Signed-off-by: Dong Nguyen <Dong.Nguyen@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>,
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Dong Nguyen
2010-07-21 16:56:08 -07:00
committed by Greg Kroah-Hartman
parent 13dd0c9767
commit 43b86af83d
3 changed files with 131 additions and 44 deletions
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1
drivers/usb/core/hcd.c
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@@ -2085,6 +2085,7 @@ irqreturn_t usb_hcd_irq (int irq, void *__hcd)
local_irq_restore(flags);
return rc;
}
EXPORT_SYMBOL_GPL(usb_hcd_irq);
/*-------------------------------------------------------------------------*/