If switching GPIOs does not sleep, then we can support atomic transfers. Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> --- drivers/i2c/busses/i2c-gpio.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c index bba5c4627de3..9684a0ac2a6d 100644 --- a/drivers/i2c/busses/i2c-gpio.c +++ b/drivers/i2c/busses/i2c-gpio.c @@ -413,6 +413,8 @@ static int i2c_gpio_probe(struct platform_device *pdev) if (gpiod_cansleep(priv->sda) || gpiod_cansleep(priv->scl)) dev_warn(dev, "Slow GPIO pins might wreak havoc into I2C/SMBus bus timing"); + else + bit_data->can_do_atomic = true; bit_data->setsda = i2c_gpio_setsda_val; bit_data->setscl = i2c_gpio_setscl_val; -- 2.11.0
