From 4b7a89a3c1cf545b03470416aa821fc2ff826b91 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Fri, 30 Jun 2006 10:31:13 +0200 Subject: [PATCH] pcmcia: fix deadlock in pcmcia_parse_events The PCMCIA layer calls pcmcia_parse_events both from user context and IRQ context; the lock thus needs to be irqsave to avoid deadlocks Signed-off-by: Arjan van de Ven Signed-off-by: Dominik Brodowski --- drivers/pcmcia/cs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/pcmcia') diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index 06e2cda4e07..f9cd831a3f3 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -699,11 +699,12 @@ static int pccardd(void *__skt) */ void pcmcia_parse_events(struct pcmcia_socket *s, u_int events) { + unsigned long flags; cs_dbg(s, 4, "parse_events: events %08x\n", events); if (s->thread) { - spin_lock(&s->thread_lock); + spin_lock_irqsave(&s->thread_lock, flags); s->thread_events |= events; - spin_unlock(&s->thread_lock); + spin_unlock_irqrestore(&s->thread_lock, flags); wake_up(&s->thread_wait); } -- cgit v1.2.3