This is a note to let you know that I've just added the patch titled
pps: clients: gpio: Propagate return value from pps_gpio_probe
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pps-clients-gpio-propagate-return-value-from-pps_gpi.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 47850e1b13348fd6ed3b08cc3427fd6e51b4d2ee
Author: Robert Hancock <robert.hancock@xxxxxxxxxx>
Date: Wed Jan 12 14:52:14 2022 -0600
pps: clients: gpio: Propagate return value from pps_gpio_probe
[ Upstream commit abaca3179b41d4b3b115f27814ee36f6fb45e897 ]
If the pps-gpio driver was probed prior to the GPIO device it uses, the
devm_gpiod_get call returned an -EPROBE_DEFER error, but pps_gpio_probe
replaced that error code with -EINVAL, causing the pps-gpio probe to
fail and not be retried later. Propagate the error return value so that
deferred probe works properly.
Fixes: 161520451dfa (pps: new client driver using GPIO)
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Acked-by: Rodolfo Giometti <giometti@xxxxxxxxxxxx>
Signed-off-by: Robert Hancock <robert.hancock@xxxxxxxxxx>
Signed-off-by: Rodolfo Giometti <giometti@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220112205214.2060954-1-robert.hancock@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/pps/clients/pps-gpio.c b/drivers/pps/clients/pps-gpio.c
index 35799e6401c9..2f4b11b4dfcd 100644
--- a/drivers/pps/clients/pps-gpio.c
+++ b/drivers/pps/clients/pps-gpio.c
@@ -169,7 +169,7 @@ static int pps_gpio_probe(struct platform_device *pdev)
/* GPIO setup */
ret = pps_gpio_setup(dev);
if (ret)
- return -EINVAL;
+ return ret;
/* IRQ setup */
ret = gpiod_to_irq(data->gpio_pin);
