From 9f9ea42839dd8a896e895354031d29571ebf0c84 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@infradead.org>
Date: Fri, 30 Mar 2007 17:48:59 -0300
Subject: drivers/media/video/se401.c: check kmalloc() return value.

From: Amit Choudhary <amit2030@gmail.com>

Check the return value of kmalloc() in function se401_start_stream(), in
file drivers/media/video/se401.c.

Signed-off-by: Amit Choudhary <amit2030@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---
 linux/drivers/media/video/se401.c | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

(limited to 'linux')

diff --git a/linux/drivers/media/video/se401.c b/linux/drivers/media/video/se401.c
index eecb4002e..bf8a6d560 100644
--- a/linux/drivers/media/video/se401.c
+++ b/linux/drivers/media/video/se401.c
@@ -458,6 +458,13 @@ static int se401_start_stream(struct usb_se401 *se401)
 	}
 	for (i=0; i<SE401_NUMSBUF; i++) {
 		se401->sbuf[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
+		if (!se401->sbuf[i].data) {
+			for(i = i - 1; i >= 0; i--) {
+				kfree(se401->sbuf[i].data);
+				se401->sbuf[i].data = NULL;
+			}
+			return -ENOMEM;
+		}
 	}
 
 	se401->bayeroffset=0;
@@ -466,13 +473,26 @@ static int se401_start_stream(struct usb_se401 *se401)
 	se401->scratch_overflow=0;
 	for (i=0; i<SE401_NUMSCRATCH; i++) {
 		se401->scratch[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
+		if (!se401->scratch[i].data) {
+			for(i = i - 1; i >= 0; i--) {
+				kfree(se401->scratch[i].data);
+				se401->scratch[i].data = NULL;
+			}
+			goto nomem_sbuf;
+		}
 		se401->scratch[i].state=BUFFER_UNUSED;
 	}
 
 	for (i=0; i<SE401_NUMSBUF; i++) {
 		urb=usb_alloc_urb(0, GFP_KERNEL);
-		if(!urb)
-			return -ENOMEM;
+		if(!urb) {
+			for(i = i - 1; i >= 0; i--) {
+				usb_kill_urb(se401->urb[i]);
+				usb_free_urb(se401->urb[i]);
+				se401->urb[i] = NULL;
+			}
+			goto nomem_scratch;
+		}
 
 		usb_fill_bulk_urb(urb, se401->dev,
 			usb_rcvbulkpipe(se401->dev, SE401_VIDEO_ENDPOINT),
@@ -490,6 +510,18 @@ static int se401_start_stream(struct usb_se401 *se401)
 	se401->framecount=0;
 
 	return 0;
+
+ nomem_scratch:
+	for (i=0; i<SE401_NUMSCRATCH; i++) {
+		kfree(se401->scratch[i].data);
+		se401->scratch[i].data = NULL;
+	}
+ nomem_sbuf:
+	for (i=0; i<SE401_NUMSBUF; i++) {
+		kfree(se401->sbuf[i].data);
+		se401->sbuf[i].data = NULL;
+	}
+	return -ENOMEM;
 }
 
 static int se401_stop_stream(struct usb_se401 *se401)
-- 
cgit v1.2.3