linux-kernel - [PATCH 22/32] omap_hsmmc: fix NULL pointer dereference

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Date:	Fri, 10 Jul 2009 15:42:41 +0300
From:	Adrian Hunter <adrian.hunter@...ia.com>
To:	Pierre Ossman <pierre@...man.eu>
Cc:	Jarkko Lavinen <jarkko.lavinen@...ia.com>,
	Denis Karpov <ext-denis.2.karpov@...ia.com>,
	Adrian Hunter <adrian.hunter@...ia.com>,
	lkml <linux-kernel@...r.kernel.org>,
	linux-omap Mailing List <linux-omap@...r.kernel.org>
Subject: [PATCH 22/32] omap_hsmmc: fix NULL pointer dereference

>From ece776be05f73787dad93802000f2d04218197d0 Mon Sep 17 00:00:00 2001
From: Jarkko Lavinen <jarkko.lavinen@...ia.com>
Date: Tue, 12 May 2009 19:46:14 +0300
Subject: [PATCH] omap_hsmmc: fix NULL pointer dereference

Do not call 'mmc_omap_xfer_done()' if the request is
already done.

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@...ia.com>
Signed-off-by: Adrian Hunter <adrian.hunter@...ia.com>
---
 drivers/mmc/host/omap_hsmmc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 41c330d..fe46234 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -670,7 +670,7 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
 
 	if (end_cmd || ((status & CC) && host->cmd))
 		mmc_omap_cmd_done(host, host->cmd);
-	if (end_trans || (status & TC))
+	if ((end_trans || (status & TC)) && host->mrq)
 		mmc_omap_xfer_done(host, data);
 
 	return IRQ_HANDLED;
-- 
1.5.6.3

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