This is a note to let you know that I've just added the patch titled
pinctrl: ti: ti-iodelay: Fix some error handling paths
to the 6.10-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:
pinctrl-ti-ti-iodelay-fix-some-error-handling-paths.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d7c197fc30044aa14bd9b2ed01369f6b957061e4
Author: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Date: Tue Jul 9 22:37:43 2024 +0200
pinctrl: ti: ti-iodelay: Fix some error handling paths
[ Upstream commit a9f2b249adeef2b9744a884355fa8f5e581d507f ]
In the probe, if an error occurs after the ti_iodelay_pinconf_init_dev()
call, it is likely that ti_iodelay_pinconf_deinit_dev() should be called,
as already done in the remove function.
Also in ti_iodelay_pinconf_init_dev(), if an error occurs after the first
regmap_update_bits() call, it is also likely that the deinit() function
should be called.
The easier way to fix it is to add a devm_add_action_or_reset() at the
rigtht place to have ti_iodelay_pinconf_deinit_dev() called when needed.
Doing so, the .remove() function can be removed, and the associated
platform_set_drvdata() call in the probe as well.
Fixes: 003910ebc83b ("pinctrl: Introduce TI IOdelay configuration driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Link: https://lore.kernel.org/0220fa5b925bd08e361be8206a5438f6229deaac.1720556038.git.christophe.jaillet@xxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/pinctrl/ti/pinctrl-ti-iodelay.c b/drivers/pinctrl/ti/pinctrl-ti-iodelay.c
index f5e5a23d22260..451801acdc403 100644
--- a/drivers/pinctrl/ti/pinctrl-ti-iodelay.c
+++ b/drivers/pinctrl/ti/pinctrl-ti-iodelay.c
@@ -273,6 +273,22 @@ static int ti_iodelay_pinconf_set(struct ti_iodelay_device *iod,
return r;
}
+/**
+ * ti_iodelay_pinconf_deinit_dev() - deinit the iodelay device
+ * @data: IODelay device
+ *
+ * Deinitialize the IODelay device (basically just lock the region back up.
+ */
+static void ti_iodelay_pinconf_deinit_dev(void *data)
+{
+ struct ti_iodelay_device *iod = data;
+ const struct ti_iodelay_reg_data *reg = iod->reg_data;
+
+ /* lock the iodelay region back again */
+ regmap_update_bits(iod->regmap, reg->reg_global_lock_offset,
+ reg->global_lock_mask, reg->global_lock_val);
+}
+
/**
* ti_iodelay_pinconf_init_dev() - Initialize IODelay device
* @iod: iodelay device
@@ -295,6 +311,11 @@ static int ti_iodelay_pinconf_init_dev(struct ti_iodelay_device *iod)
if (r)
return r;
+ r = devm_add_action_or_reset(iod->dev, ti_iodelay_pinconf_deinit_dev,
+ iod);
+ if (r)
+ return r;
+
/* Read up Recalibration sequence done by bootloader */
r = regmap_read(iod->regmap, reg->reg_refclk_offset, &val);
if (r)
@@ -353,21 +374,6 @@ static int ti_iodelay_pinconf_init_dev(struct ti_iodelay_device *iod)
return 0;
}
-/**
- * ti_iodelay_pinconf_deinit_dev() - deinit the iodelay device
- * @iod: IODelay device
- *
- * Deinitialize the IODelay device (basically just lock the region back up.
- */
-static void ti_iodelay_pinconf_deinit_dev(struct ti_iodelay_device *iod)
-{
- const struct ti_iodelay_reg_data *reg = iod->reg_data;
-
- /* lock the iodelay region back again */
- regmap_update_bits(iod->regmap, reg->reg_global_lock_offset,
- reg->global_lock_mask, reg->global_lock_val);
-}
-
/**
* ti_iodelay_get_pingroup() - Find the group mapped by a group selector
* @iod: iodelay device
@@ -877,27 +883,11 @@ static int ti_iodelay_probe(struct platform_device *pdev)
return ret;
}
- platform_set_drvdata(pdev, iod);
-
return pinctrl_enable(iod->pctl);
}
-/**
- * ti_iodelay_remove() - standard remove
- * @pdev: platform device
- */
-static void ti_iodelay_remove(struct platform_device *pdev)
-{
- struct ti_iodelay_device *iod = platform_get_drvdata(pdev);
-
- ti_iodelay_pinconf_deinit_dev(iod);
-
- /* Expect other allocations to be freed by devm */
-}
-
static struct platform_driver ti_iodelay_driver = {
.probe = ti_iodelay_probe,
- .remove_new = ti_iodelay_remove,
.driver = {
.name = DRIVER_NAME,
.of_match_table = ti_iodelay_of_match,
