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| author | Jiri Slaby <jirislaby@gmail.com> | 2007-02-10 01:44:53 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-11 10:51:26 -0800 |
| commit | cb4a10ccb0c5b5b02dec1a4a97cba1e8b2c2a325 (patch) | |
| tree | 5abb7c542e810632c36cd820ec2acc1b7a10d12a /drivers/char/isicom.c | |
| parent | f0a0ba6d69882ae14f24d7eb6e2ae07f30fbd56a (diff) | |
| download | kernel-common-cb4a10ccb0c5b5b02dec1a4a97cba1e8b2c2a325.tar.gz kernel-common-cb4a10ccb0c5b5b02dec1a4a97cba1e8b2c2a325.tar.bz2 kernel-common-cb4a10ccb0c5b5b02dec1a4a97cba1e8b2c2a325.zip | |
[PATCH] Char: isicom, check card state in isr
Check if the card really interrupted us by reading its IO space and eventualy
return IRQ_NONE.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/isicom.c')
| -rw-r--r-- | drivers/char/isicom.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index 42171ad001dd..eddb8d3a620e 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -540,6 +540,11 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) return IRQ_NONE; base = card->base; + + /* did the card interrupt us? */ + if (!(inw(base + 0x0e) & 0x02)) + return IRQ_NONE; + spin_lock(&card->card_lock); /* |