From: Gerd Knorr <kraxel@suse.de>
Date: Wed, 25 May 2005 19:31:26 +0000 (-0700)
Subject: [PATCH] v4l: bttv i2c oops fix
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=5daf05fbf73fc199e7a93a818e504856d07c5586;p=openwrt%2Fstaging%2Fblogic.git

[PATCH] v4l: bttv i2c oops fix

Don't try to access the i2c bus if the register wasn't successful.

Signed-off-by: Gerd Knorr <kraxel@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/media/video/bttv-i2c.c b/drivers/media/video/bttv-i2c.c
index e3f477dff827..c2368bc832ed 100644
--- a/drivers/media/video/bttv-i2c.c
+++ b/drivers/media/video/bttv-i2c.c
@@ -363,6 +363,9 @@ int bttv_I2CWrite(struct bttv *btv, unsigned char addr, unsigned char b1,
 /* read EEPROM content */
 void __devinit bttv_readee(struct bttv *btv, unsigned char *eedata, int addr)
 {
+	memset(eedata, 0, 256);
+	if (0 != btv->i2c_rc)
+		return;
 	btv->i2c_client.addr = addr >> 1;
 	tveeprom_read(&btv->i2c_client, eedata, 256);
 }