5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yang Yingliang <yangyingliang@xxxxxxxxxx>
[ Upstream commit 8f773bfbdd428819328a2d185976cfc6ae811cd3 ]
This driver calls pinctrl_register_and_init() which is not
devm_ managed, it will leads memory leak if pinctrl_enable()
fails. Replace it with devm_pinctrl_register_and_init().
And call pcs_free_resources() if pinctrl_enable() fails.
Fixes: 5038a66dad01 ("pinctrl: core: delete incorrect free in pinctrl_enable()")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240606023704.3931561-3-yangyingliang@xxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/pinctrl/pinctrl-single.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index ce5be6f0b7aac..13517243355ce 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -1311,7 +1311,6 @@ static void pcs_irq_free(struct pcs_device *pcs)
static void pcs_free_resources(struct pcs_device *pcs)
{
pcs_irq_free(pcs);
- pinctrl_unregister(pcs->pctl);
#if IS_BUILTIN(CONFIG_PINCTRL_SINGLE)
if (pcs->missing_nr_pinctrl_cells)
@@ -1864,7 +1863,7 @@ static int pcs_probe(struct platform_device *pdev)
if (ret < 0)
goto free;
- ret = pinctrl_register_and_init(&pcs->desc, pcs->dev, pcs, &pcs->pctl);
+ ret = devm_pinctrl_register_and_init(pcs->dev, &pcs->desc, pcs, &pcs->pctl);
if (ret) {
dev_err(pcs->dev, "could not register single pinctrl driver\n");
goto free;
@@ -1897,8 +1896,10 @@ static int pcs_probe(struct platform_device *pdev)
dev_info(pcs->dev, "%i pins, size %u\n", pcs->desc.npins, pcs->size);
- return pinctrl_enable(pcs->pctl);
+ if (pinctrl_enable(pcs->pctl))
+ goto free;
+ return 0;
free:
pcs_free_resources(pcs);
--
2.43.0
