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V4L/DVB (11420): gspca - m5602: Improve error handling in the ov9650 driver 

Some errors were not propagated properly.

Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Erik Andr?n 2009-01-02 17:58:08 -03:00 committed by Mauro Carvalho Chehab
parent 7136e705d8
commit 6b0555008e
1 changed files with 17 additions and 5 deletions
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22
drivers/media/video/gspca/m5602/m5602_ov9650.c
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@ -218,6 +218,7 @@ static void ov9650_dump_registers(struct sd *sd);
int ov9650_probe(struct sd *sd)
{
int err = 0;
u8 prod_id = 0, ver_id = 0, i;
if (force_sensor) {
@ -233,15 +234,18 @@ int ov9650_probe(struct sd *sd)
info("Probing for an ov9650 sensor");
/* Run the pre-init to actually probe the unit */
for (i = 0; i < ARRAY_SIZE(preinit_ov9650); i++) {
for (i = 0; i < ARRAY_SIZE(preinit_ov9650) && !err; i++) {
u8 data = preinit_ov9650[i][2];
if (preinit_ov9650[i][0] == SENSOR)
m5602_write_sensor(sd,
err = m5602_write_sensor(sd,
preinit_ov9650[i][1], &data, 1);
else
m5602_write_bridge(sd, preinit_ov9650[i][1], data);
err = m5602_write_bridge(sd, preinit_ov9650[i][1], data);
}
if (err < 0)
return err;
if (m5602_read_sensor(sd, OV9650_PID, &prod_id, 1))
return -ENODEV;
@ -458,7 +462,10 @@ int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
u8 i2c_data;
struct sd *sd = (struct sd *) gspca_dev;
m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
if (err < 0)
return err;
*val = (i2c_data & 0x03) << 8;
err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
@ -476,11 +483,16 @@ int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
/* The 2 MSB */
/* Read the OV9650_VREF register first to avoid
corrupting the VREF high and low bits */
m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
if (err < 0)
return err;
/* Mask away all uninteresting bits */
i2c_data = ((val & 0x0300) >> 2) |
(i2c_data & 0x3F);
err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
if (err < 0)
return err;
/* The 8 LSBs */
i2c_data = val & 0xff;