This is a note to let you know that I've just added the patch titled
drm/panel: ili9341: Respect deferred probe
to the 6.6-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:
drm-panel-ili9341-respect-deferred-probe.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b6133af81e22702cdec186dbbc49c9757c0b0354
Author: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Date: Thu Apr 25 17:26:18 2024 +0300
drm/panel: ili9341: Respect deferred probe
[ Upstream commit 740fc1e0509be3f7e2207e89125b06119ed62943 ]
GPIO controller might not be available when driver is being probed.
There are plenty of reasons why, one of which is deferred probe.
Since GPIOs are optional, return any error code we got to the upper
layer, including deferred probe. With that in mind, use dev_err_probe()
in order to avoid spamming the logs.
Fixes: 5a04227326b0 ("drm/panel: Add ilitek ili9341 panel driver")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Reviewed-by: Sui Jingfeng <sui.jingfeng@xxxxxxxxx>
Link: https://lore.kernel.org/r/20240425142706.2440113-3-andriy.shevchenko@xxxxxxxxxxxxxxx
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425142706.2440113-3-andriy.shevchenko@xxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
index 7584ddb0e4416..24c74c56e5648 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
@@ -715,11 +715,11 @@ static int ili9341_probe(struct spi_device *spi)
reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(reset))
- dev_err(dev, "Failed to get gpio 'reset'\n");
+ return dev_err_probe(dev, PTR_ERR(reset), "Failed to get gpio 'reset'\n");
dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
if (IS_ERR(dc))
- dev_err(dev, "Failed to get gpio 'dc'\n");
+ return dev_err_probe(dev, PTR_ERR(dc), "Failed to get gpio 'dc'\n");
if (!strcmp(id->name, "sf-tc240t-9370-t"))
return ili9341_dpi_probe(spi, dc, reset);
