From: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Date: Wed, 12 Nov 2008 02:27:59 +0000 (-0300)
Subject: V4L/DVB (9601): ttusb_dec: Add NULL pointer validation
X-Git-Tag: v2.6.28-rc7~1^2~24
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=d7c31a1e754b5140eefeeb10c3c3be17f3702452;p=linux-2.6-omap-h63xx.git

V4L/DVB (9601): ttusb_dec: Add NULL pointer validation

Added validation for NULL pointer

Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/dvb/ttusb-dec/ttusb_dec.c b/drivers/media/dvb/ttusb-dec/ttusb_dec.c
index ab33fec8a19..c1386e9b13d 100644
--- a/drivers/media/dvb/ttusb-dec/ttusb_dec.c
+++ b/drivers/media/dvb/ttusb-dec/ttusb_dec.c
@@ -1157,6 +1157,12 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec)
 						ISO_BUF_COUNT),
 					       &dec->iso_dma_handle);
 
+	if (!dec->iso_buffer) {
+		dprintk("%s: pci_alloc_consistent - not enough memory\n",
+			__func__);
+		return -ENOMEM;
+	}
+
 	memset(dec->iso_buffer, 0,
 	       ISO_FRAME_SIZE * (FRAMES_PER_ISO_BUF * ISO_BUF_COUNT));