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uio: Cleanup irq handling.

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Change the value of UIO_IRQ_NONE -2 to 0.  0 is well defined in the rest
of the kernel as the value to indicate an irq has not been assigned.

Update the calls to request_irq and free_irq to only ignore UIO_IRQ_NONE
and UIO_IRQ_CUSTOM allowing the rest of the kernel's possible irq
numbers to be used.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Eric W. Biederman 2010-09-14 11:37:36 -07:00 • committed by Greg Kroah-Hartman
commit 6427a7655a
2 changed files with 8 additions and 8 deletions
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2
include/linux/uio_driver.h
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@ -108,7 +108,7 @@ extern void uio_event_notify(struct uio_info *info);
/* defines for uio_info->irq */
#define UIO_IRQ_CUSTOM -1
#define UIO_IRQ_NONE -2
#define UIO_IRQ_NONE 0
/* defines for uio_mem->memtype */
#define UIO_MEM_NONE 0