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| author | Jiri Slaby <jirislaby@gmail.com> | 2007-02-10 10:44:52 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-11 19:51:25 +0100 |
| commit | 174f13076717b8c7b70a18a474a0541a31d24527 (patch) | |
| tree | c077d737f9d6bbb60c727c7c615f1cc8fb6b9f5a /drivers/char/isicom.c | |
| parent | [PATCH] make drivers/char/mxser_new.c:mxser_hangup() static (diff) | |
| download | linux-174f13076717b8c7b70a18a474a0541a31d24527.tar.xz linux-174f13076717b8c7b70a18a474a0541a31d24527.zip | |
[PATCH] Char: isicom, fix locking in isr
2 spin_unlocks are omitted in the interrupt handler. Put them there to fix up
deadlocking on UP.
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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index 26d3f78bf8ed..c837ade1e80b 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -564,6 +564,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) port = card->ports + channel; if (!(port->flags & ASYNC_INITIALIZED)) { outw(0x0000, base+0x04); /* enable interrupts */ + spin_unlock(&card->card_lock); return IRQ_HANDLED; } @@ -678,6 +679,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) tty_flip_buffer_push(tty); } outw(0x0000, base+0x04); /* enable interrupts */ + spin_unlock(&card->card_lock); return IRQ_HANDLED; } |