From: Michael Buesch <mb@bu3sch.de>
Date: Mon, 11 Apr 2011 21:00:44 +0000 (-0400)
Subject: mmc: omap: Fix possible NULL pointer deref
X-Git-Tag: v2.6.39-rc6~4^2~4
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=f69475142136c8ad9b9c717aea2ff907aed9f863

mmc: omap: Fix possible NULL pointer deref

Either OMAP_MMC_STAT_CARD_ERR or OMAP_MMC_STAT_END_OF_CMD might fire
if there is no host->cmd pointer.

Check for a valid host->cmd pointer before calling mmc_omap_cmd_done().

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 2e032f0e8cf4..a6c329040140 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -832,7 +832,7 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
 		return IRQ_HANDLED;
 	}
 
-	if (end_command)
+	if (end_command && host->cmd)
 		mmc_omap_cmd_done(host, host->cmd);
 	if (host->data != NULL) {
 		if (transfer_error)