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V4L/DVB (13292): tvp514x: recognize the error case in tvp514x_read_reg()

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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>
This commit is contained in:
Sebastian Andrzej Siewior 2009-11-04 15:35:09 -03:00 committed by Mauro Carvalho Chehab
parent 480be1851a
commit 6f901a9919
1 changed files with 1 additions and 1 deletions
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2
drivers/media/video/tvp514x.c
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@ -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++;