Exynos-I2C uses default timeout of 1 second for the whole transaction, including re-transmissions due to arbitration lost errors (-EAGAIN). To allow re-transmissions driver's internal timeout should be significantly lower, 100ms seems to be good candidate. Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx> --- drivers/i2c/busses/i2c-exynos5.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c index 3855e0b11877..b02428498f6d 100644 --- a/drivers/i2c/busses/i2c-exynos5.c +++ b/drivers/i2c/busses/i2c-exynos5.c @@ -170,7 +170,7 @@ #define HSI2C_HS_TX_CLOCK 1000000 #define HSI2C_FS_TX_CLOCK 100000 -#define EXYNOS5_I2C_TIMEOUT (msecs_to_jiffies(1000)) +#define EXYNOS5_I2C_TIMEOUT (msecs_to_jiffies(100)) #define HSI2C_EXYNOS7 BIT(0) -- 2.15.0
