[PATCH 6/6] staging: sm750fb: sm750_sw_i2c_init: return -EINVAL for invalid GPIO

[Soham Kute <officialsohamkute@gmail.com>]

Return -EINVAL instead of -1 when the GPIO pin number is out of
range. The caller ignores the return value.

Signed-off-by: Soham Kute <officialsohamkute@gmail.com>
---
 drivers/staging/sm750fb/ddk750_swi2c.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/sm750fb/ddk750_swi2c.c b/drivers/staging/sm750fb/ddk750_swi2c.c
index c73943341f66..46599be8d6b9 100644
--- a/drivers/staging/sm750fb/ddk750_swi2c.c
+++ b/drivers/staging/sm750fb/ddk750_swi2c.c
@@ -344,7 +344,7 @@ static unsigned char sw_i2c_read_byte(unsigned char ack)
  *      data_gpio     - The GPIO pin to be used as i2c SDA
  *
  * Return Value:
- *      -1   - Fail to initialize the i2c
+ *      -EINVAL - Fail to initialize the i2c
  *       0   - Success
  */
 static long sm750le_i2c_init(unsigned char clk_gpio, unsigned char data_gpio)
@@ -382,7 +382,7 @@ static long sm750le_i2c_init(unsigned char clk_gpio, unsigned char data_gpio)
  *      data_gpio     - The GPIO pin to be used as i2c SDA
  *
  * Return Value:
- *      -1   - Fail to initialize the i2c
+ *      -EINVAL - Fail to initialize the i2c
  *       0   - Success
  */
 long sm750_sw_i2c_init(unsigned char clk_gpio, unsigned char data_gpio)
@@ -394,7 +394,7 @@ long sm750_sw_i2c_init(unsigned char clk_gpio, unsigned char data_gpio)
 	 * range is only from [0..63]
 	 */
 	if ((clk_gpio > 31) || (data_gpio > 31))
-		return -1;
+		return -EINVAL;
 
 	if (sm750_get_chip_type() == SM750LE)
 		return sm750le_i2c_init(clk_gpio, data_gpio);
-- 
2.34.1