From: Pierre Ossman <drzeus@drzeus.cx>
Date: Wed, 11 Jul 2007 18:28:02 +0000 (+0200)
Subject: mmc: add a might_sleep() to mmc_claim_host()
X-Git-Tag: v2.6.23-rc2~189^2~6
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=cf795bfb3ad4e2f8f6bb346aa8edb8272d4c70a2;p=linux-2.6-omap-h63xx.git

mmc: add a might_sleep() to mmc_claim_host()

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>
---

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index e08aa352bd5..3208890b10b 100644
--- 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) {