| Message ID | 20200309211618.25535-1-hamish.martin@alliedtelesis.co.nz |
|---|---|
| State | Accepted |
| Headers | show |
| Series | i2c: gpio: suppress error on probe defer | expand |
On Mon, Mar 9, 2020 at 10:16 PM Hamish Martin <hamish.martin@alliedtelesis.co.nz> wrote: > If a GPIO we are trying to use is not available and we are deferring > the probe, don't output an error message. > This seems to have been the intent of commit 05c74778858d > ("i2c: gpio: Add support for named gpios in DT") but the error was > still output due to not checking the updated 'retdesc'. > > Fixes: 05c74778858d ("i2c: gpio: Add support for named gpios in DT") > Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz> Acked-by: Linus Walleij <linus.walleij@linaro.org> Maintainers have varied opinions about this. Some think it is a stopgap problem until we get probes ordered by other measures, others think developers should simply learn the meaning of error -517 and realize it is no error. But this is fine with me. Yours, Linus Walleij
On Tue, Mar 10, 2020 at 10:16:18AM +1300, Hamish Martin wrote: > If a GPIO we are trying to use is not available and we are deferring > the probe, don't output an error message. > This seems to have been the intent of commit 05c74778858d > ("i2c: gpio: Add support for named gpios in DT") but the error was > still output due to not checking the updated 'retdesc'. > > Fixes: 05c74778858d ("i2c: gpio: Add support for named gpios in DT") > Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz> Applied to for-current, thanks!
diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c index 3a9e840a3546..a4a6825c8758 100644 --- a/drivers/i2c/busses/i2c-gpio.c +++ b/drivers/i2c/busses/i2c-gpio.c @@ -348,7 +348,7 @@ static struct gpio_desc *i2c_gpio_get_desc(struct device *dev, if (ret == -ENOENT) retdesc = ERR_PTR(-EPROBE_DEFER); - if (ret != -EPROBE_DEFER) + if (PTR_ERR(retdesc) != -EPROBE_DEFER) dev_err(dev, "error trying to get descriptor: %d\n", ret); return retdesc;
If a GPIO we are trying to use is not available and we are deferring the probe, don't output an error message. This seems to have been the intent of commit 05c74778858d ("i2c: gpio: Add support for named gpios in DT") but the error was still output due to not checking the updated 'retdesc'. Fixes: 05c74778858d ("i2c: gpio: Add support for named gpios in DT") Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz> --- drivers/i2c/busses/i2c-gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)