lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mmc: add a might_sleep() to mmc_claim_host()

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mmc/core/core.c
View File

@@ -260,6 +260,8 @@ void mmc_claim_host(struct mmc_host *host)
DECLARE_WAITQUEUE(wait, current); DECLARE_WAITQUEUE(wait, current);
unsigned long flags; unsigned long flags;
might_sleep();
add_wait_queue(&host->wq, &wait); add_wait_queue(&host->wq, &wait);
spin_lock_irqsave(&host->lock, flags); spin_lock_irqsave(&host->lock, flags);
while (1) { while (1) {