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mmc: add a might_sleep() to mmc_claim_host()

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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>
This commit is contained in:
Pierre Ossman 2007-07-11 20:28:02 +02:00
parent 67a61c4847
commit cf795bfb3a
1 changed files with 2 additions and 0 deletions
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2
drivers/mmc/core/core.c
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@ -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) {