Andreas Larsson 20424d85f8 sparc32, leon: Check for existent irq_map entry in leon_handle_ext_irq ...

If an irq is being unlinked concurrently with leon_handle_ext_irq,
irq_map[eirq] might be null in leon_handle_ext_irq. Make sure that
this is not dereferenced.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2012-11-09 16:30:50 -08:00

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