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[PATCH] USB: net2280: check for shared IRQs
author
Alan Stern
<stern@rowland.harvard.edu>
Fri, 14 Apr 2006 20:44:11 +0000
(16:44 -0400)
committer
Greg Kroah-Hartman
<gregkh@suse.de>
Thu, 27 Apr 2006 17:28:58 +0000
(10:28 -0700)
This patch (as670) adds a check for whether a shared IRQ was actually
generated by the net2280 device.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/gadget/net2280.c
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diff --git
a/drivers/usb/gadget/net2280.c
b/drivers/usb/gadget/net2280.c
index
c842b19
..
b2d507f
100644
(file)
--- a/
drivers/usb/gadget/net2280.c
+++ b/
drivers/usb/gadget/net2280.c
@@
-2742,6
+2742,10
@@
static irqreturn_t net2280_irq (int irq, void *_dev, struct pt_regs * r)
{
struct net2280 *dev = _dev;
+ /* shared interrupt, not ours */
+ if (!(readl(&dev->regs->irqstat0) & (1 << INTA_ASSERTED)))
+ return IRQ_NONE;
+
spin_lock (&dev->lock);
/* handle disconnect, dma, and more */