drivers: i2c: esp32: Fix to_read value on i2c_esp32_read_msg()

to_read is the minimum value between I2C_ESP32_BUFFER_SIZE and (msg.len - 1) rather than the maximum value. Signed-off-by: Vitor Massaru Iha <[email protected]>
zephyrproject-rtos · Feb 7, 2018 · e9d1015 · e9d1015
1 parent 74321ec
commit e9d1015
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/i2c/i2c_esp32.c b/drivers/i2c/i2c_esp32.c
@@ -423,7 +423,7 @@ static int i2c_esp32_read_msg(struct device *dev, u16_t addr,
 
 	for (; msg.len; cmd = (void *)I2C_COMD0_REG(config->index)) {
 		volatile struct i2c_esp32_cmd *wait_cmd = NULL;
-		u32_t to_read = max(I2C_ESP32_BUFFER_SIZE, msg.len - 1);
+		u32_t to_read = min(I2C_ESP32_BUFFER_SIZE, msg.len - 1);
 
 		/* Might be the last byte, in which case, `to_read` will
 		 * be 0 here.  See comment below.