From 6f901a991991fd3c9ac51bc7234a6706ef17ddfe Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 4 Nov 2009 15:35:09 -0300
Subject: [PATCH] V4L/DVB (13292): tvp514x: recognize the error case in
tvp514x_read_reg()
i2c_smbus_read_byte_data() returns a negative value on error. It is very
likely to be != -1 (-EPERM).
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
drivers/media/video/tvp514x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/video/tvp514x.c b/drivers/media/video/tvp514x.c
index 244372627df2..26b4e718cd6d 100644
--- a/drivers/media/video/tvp514x.c
+++ b/drivers/media/video/tvp514x.c
@@ -272,7 +272,7 @@ static int tvp514x_read_reg(struct v4l2_subdev *sd, u8 reg)
read_again:
err = i2c_smbus_read_byte_data(client, reg);
- if (err == -1) {
+ if (err < 0) {
if (retry <= I2C_RETRY_COUNT) {
v4l2_warn(sd, "Read: retry ... %d\n", retry);
retry++;