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mmc: add a might_sleep() to mmc_claim_host()
author
Pierre Ossman
<drzeus@drzeus.cx>
Wed, 11 Jul 2007 18:28:02 +0000
(20:28 +0200)
committer
Pierre Ossman
<drzeus@drzeus.cx>
Wed, 25 Jul 2007 23:53:48 +0000
(
01:53
+0200)
In the normal case, the host lock can be claimed directly.
When it cannot, the caller will sleep. Make sure we don't
have any latent bugs by always calling might_sleep().
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
drivers/mmc/core/core.c
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diff --git
a/drivers/mmc/core/core.c
b/drivers/mmc/core/core.c
index
e08aa35
..
3208890
100644
(file)
--- a/
drivers/mmc/core/core.c
+++ b/
drivers/mmc/core/core.c
@@
-260,6
+260,8
@@
void mmc_claim_host(struct mmc_host *host)
DECLARE_WAITQUEUE(wait, current);
unsigned long flags;
+ might_sleep();
+
add_wait_queue(&host->wq, &wait);
spin_lock_irqsave(&host->lock, flags);
while (1) {