4.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wolfram Sang <wsa+rene...@sang-engineering.com>
commit 12b731dd46d9ee646318e6e9dc587314a3908a46 upstream.
It seems that during the conversion from gpio* to gpiod*, the initial
state of SCL was wrongly switched to LOW. Fix it to be HIGH again.
Fixes: 7bb75029ef34 ("i2c: gpio: Enforce open drain through gpiolib")
Signed-off-by: Wolfram Sang <wsa+rene...@sang-engineering.com>
Tested-by: Geert Uytterhoeven <geert+rene...@glider.be>
Reviewed-by: Linus Walleij <linus.wall...@linaro.org>
Signed-off-by: Wolfram Sang <w...@the-dreams.de>
Cc: sta...@kernel.org
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/i2c/busses/i2c-gpio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/i2c/busses/i2c-gpio.c
+++ b/drivers/i2c/busses/i2c-gpio.c
@@ -279,9 +279,9 @@ static int i2c_gpio_probe(struct platfor
* required for an I2C bus.
*/
if (pdata->scl_is_open_drain)
- gflags = GPIOD_OUT_LOW;
+ gflags = GPIOD_OUT_HIGH;
else
- gflags = GPIOD_OUT_LOW_OPEN_DRAIN;
+ gflags = GPIOD_OUT_HIGH_OPEN_DRAIN;
priv->scl = i2c_gpio_get_desc(dev, "scl", 1, gflags);
if (IS_ERR(priv->scl))
return PTR_ERR(priv->scl);
