sfc: Work around unreliable legacy interrupt status

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In rare cases, reading the legacy interrupt status register can
acknowledge an event queue whose attention flag has not yet been set
in the register.  Until we service this event queue it will not
generate any more interrupts.  Therefore, as a secondary check, poll
the next slot in each active event queue whose flag is not set.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ben Hutchings 2009-03-20 13:26:41 +00:00 • committed by David S. Miller

parent bb145a9e28

commit a9de9a74c6

1 changed files with 14 additions and 12 deletions

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26

drivers/net/sfc/falcon.c

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