linux-kernel - [PATCH 2.6.19-rc2] [REVISED] drivers/media/video/se401.c: check kmalloc() return value.

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Message-Id: <20061017213155.35983846.amit2030@gmail.com>
Date:	Tue, 17 Oct 2006 21:31:55 -0700
From:	Amit Choudhary <amit2030@...il.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH 2.6.19-rc2] [REVISED] drivers/media/video/se401.c: check
 kmalloc() return value.

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

Signed-off-by: Amit Choudhary <amit2030@...il.com>

diff --git a/drivers/media/video/se401.c b/drivers/media/video/se401.c
index 7aeec57..fe94227 100644
--- a/drivers/media/video/se401.c
+++ b/drivers/media/video/se401.c
@@ -450,6 +450,8 @@ static int se401_start_stream(struct usb
 	}
 	for (i=0; i<SE401_NUMSBUF; i++) {
 		se401->sbuf[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
+		if (!se401->sbuf[i].data)
+			goto nomem_err;
 	}
 
 	se401->bayeroffset=0;
@@ -458,13 +460,15 @@ static int se401_start_stream(struct usb
 	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)
+			goto nomem_err;
 		se401->scratch[i].state=BUFFER_UNUSED;
 	}
 
 	for (i=0; i<SE401_NUMSBUF; i++) {
 		urb=usb_alloc_urb(0, GFP_KERNEL);
 		if(!urb)
-			return -ENOMEM;
+			goto nomem_err;
 
 		usb_fill_bulk_urb(urb, se401->dev,
 			usb_rcvbulkpipe(se401->dev, SE401_VIDEO_ENDPOINT),
@@ -482,6 +486,20 @@ static int se401_start_stream(struct usb
 	se401->framecount=0;
 
 	return 0;
+
+ nomem_err:
+	for (i=0; i<SE401_NUMSBUF; i++) {
+		usb_kill_urb(se401->urb[i]);
+		usb_free_urb(se401->urb[i]);
+		se401->urb[i] = NULL;
+		kfree(se401->sbuf[i].data);
+		se401->sbuf[i].data = NULL;
+	}
+	for (i=0; i<SE401_NUMSCRATCH; i++) {
+		kfree(se401->scratch[i].data);
+		se401->scratch[i].data = NULL;
+	}
+	return -ENOMEM;
 }
 
 static int se401_stop_stream(struct usb_se401 *se401)
-
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