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Red Hat Bugzilla – Attachment 312323 Details for
Bug 456218
kernel: serial open/close loop disables irq [rhel-5.3]
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[patch]
Proposed backported patch
patch (text/plain), 955 bytes, created by
Eugene Teo (Security Response)
on 2008-07-22 09:59:10 UTC
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Description:
Proposed backported patch
Filename:
MIME Type:
Creator:
Eugene Teo (Security Response)
Created:
2008-07-22 09:59:10 UTC
Size:
955 bytes
patch
obsolete
>[RHEL5.3 PATCH] kernel: serial open/close loop disables irq > >This is for bz#456218. > >Backport of upstream commit 8528b0f1de1101c6002036fd53638fb21111d0ea > >Any newly added irq handler may obviously make any old spurious irq >status invalid, since the new handler may well be the thing that is >supposed to handle any interrupts that came in. > >So just clear the statistics when adding handlers. > >Signed-off-by: Eugene Teo <eteo@redhat.com> >--- > kernel/irq/manage.c | 3 +++ > 1 file changed, 3 insertions(+) > >diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c >index c2f92f1..2df2d67 100644 >--- a/kernel/irq/manage.c >+++ b/kernel/irq/manage.c >@@ -312,6 +312,9 @@ int setup_irq(unsigned int irq, struct irqaction *new) > /* Undo nested disables: */ > desc->depth = 1; > } >+ /* Reset broken irq detection when installing new handler */ >+ desc->irq_count = 0; >+ desc->irqs_unhandled = 0; > spin_unlock_irqrestore(&desc->lock, flags); > > new->irq = irq;
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