4.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sean Wang <sean.wang@xxxxxxxxxxxx>
[ Upstream commit 238262af08a20e5f1932fcf606b8b84370ac8b77 ]
After the commit acf137951367 ("pinctrl: core: Return selector to the
pinctrl driver") and the commit 47f1242d19c3 ("pinctrl: pinmux: Return
selector to the pinctrl driver"), it's necessary to add the fixes
needed for the pin controller drivers to use the appropriate returned
selector for a negative error number returned in case of the fail at
these functions. Otherwise, the driver would have a failed probe and
that causes boot message cannot correctly output and devices fail
to acquire their own pins.
Cc: Kevin Hilman <khilman@xxxxxxxxxxxx>
Fixes: acf137951367 ("pinctrl: core: Return selector to the pinctrl driver")
Fixes: 47f1242d19c3 ("pinctrl: pinmux: Return selector to the pinctrl driver")
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pinctrl/mediatek/pinctrl-mt7622.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/mediatek/pinctrl-mt7622.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt7622.c
@@ -1537,7 +1537,7 @@ static int mtk_build_groups(struct mtk_p
err = pinctrl_generic_add_group(hw->pctrl, group->name,
group->pins, group->num_pins,
group->data);
- if (err) {
+ if (err < 0) {
dev_err(hw->dev, "Failed to register group %s\n",
group->name);
return err;
@@ -1558,7 +1558,7 @@ static int mtk_build_functions(struct mt
func->group_names,
func->num_group_names,
func->data);
- if (err) {
+ if (err < 0) {
dev_err(hw->dev, "Failed to register function %s\n",
func->name);
return err;
