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camera:sensor i2c write and read repeat 3 times when return error

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ddl
2011-01-04 10:36:44 +08:00
parent 815cfdcd4b
commit b35aedcbab
2 changed files with 8 additions and 8 deletions
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8
drivers/media/video/ov2659.c
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@@ -1263,10 +1263,10 @@ static int sensor_write(struct i2c_client *client, u16 reg, u8 val)
msg->scl_rate = CONFIG_SENSOR_I2C_SPEED; /* ddl@rock-chips.com : 100kHz */
msg->read_type = 0; /* fpga i2c:0==I2C_NORMAL : direct use number not enum for don't want include spi_fpga.h */
cnt = 1;
cnt = 3;
err = -EAGAIN;
while ((cnt--) && (err < 0)) { /* ddl@rock-chips.com : Transfer again if transent is failed */
while ((cnt-- > 0) && (err < 0)) { /* ddl@rock-chips.com : Transfer again if transent is failed */
err = i2c_transfer(client->adapter, msg, 1);
if (err >= 0) {
@@ -1304,9 +1304,9 @@ static int sensor_read(struct i2c_client *client, u16 reg, u8 *val)
msg[1].scl_rate = CONFIG_SENSOR_I2C_SPEED; /* ddl@rock-chips.com : 100kHz */
msg[1].read_type = 2; /* fpga i2c:0==I2C_NO_STOP : direct use number not enum for don't want include spi_fpga.h */
cnt = 1;
cnt = 3;
err = -EAGAIN;
while ((cnt--) && (err < 0)) { /* ddl@rock-chips.com : Transfer again if transent is failed */
while ((cnt-- > 0) && (err < 0)) { /* ddl@rock-chips.com : Transfer again if transent is failed */
err = i2c_transfer(client->adapter, msg, 2);
if (err >= 0) {

8
drivers/media/video/ov5642.c
View File

@@ -3179,10 +3179,10 @@ static int sensor_write(struct i2c_client *client, u16 reg, u8 val)
msg->scl_rate = CONFIG_SENSOR_I2C_SPEED; /* ddl@rock-chips.com : 100kHz */
msg->read_type = 0; /* fpga i2c:0==I2C_NORMAL : direct use number not enum for don't want include spi_fpga.h */
cnt = 1;
cnt = 3;
err = -EAGAIN;
while ((cnt--) && (err < 0)) { /* ddl@rock-chips.com : Transfer again if transent is failed */
while ((cnt-- > 0) && (err < 0)) { /* ddl@rock-chips.com : Transfer again if transent is failed */
err = i2c_transfer(client->adapter, msg, 1);
if (err >= 0) {
@@ -3220,9 +3220,9 @@ static int sensor_read(struct i2c_client *client, u16 reg, u8 *val)
msg[1].scl_rate = CONFIG_SENSOR_I2C_SPEED; /* ddl@rock-chips.com : 100kHz */
msg[1].read_type = 2; /* fpga i2c:0==I2C_NO_STOP : direct use number not enum for don't want include spi_fpga.h */
cnt = 1;
cnt = 3;
err = -EAGAIN;
while ((cnt--) && (err < 0)) { /* ddl@rock-chips.com : Transfer again if transent is failed */
while ((cnt-- > 0) && (err < 0)) { /* ddl@rock-chips.com : Transfer again if transent is failed */
err = i2c_transfer(client->adapter, msg, 2);
if (err >= 0) {