Only call free_irq if we marked the request_irq has having succeeded
instead of whenever the the sub-driver identified the interrupt to use.
Signed-off-by: Milton Miller <milt...@bga.com>
---
Appears to be a bugfix but might use a bit of time in -next.
This code was created in 2.6.28 to allow s390 to build without adding ifdefs.
Many hvc-console sub-drivers have a single channel and are not modules.
Index: work.git/drivers/char/hvc_irq.c
===================================================================
--- work.git.orig/drivers/char/hvc_irq.c 2009-01-08 04:07:28.000000000
-0600
+++ work.git/drivers/char/hvc_irq.c 2009-01-08 04:07:47.000000000 -0600
@@ -37,7 +37,7 @@ int notifier_add_irq(struct hvc_struct *
void notifier_del_irq(struct hvc_struct *hp, int irq)
{
- if (!irq)
+ if (!hp->irq_requested)
return;
free_irq(irq, hp);
hp->irq_requested = 0;
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