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* [PATCH AUTOSEL 5.4 06/15] pinctrl: ralink: rt2880: avoid to error in calls is pin is already enabled
       [not found] <>
@ 2021-06-15 15:49 ` Sasha Levin
  0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2021-06-15 15:49 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Sergio Paracuellos, Linus Walleij, Sasha Levin, linux-staging,
	linux-arm-kernel, linux-mediatek

From: Sergio Paracuellos <>

[ Upstream commit eb367d875f94a228c17c8538e3f2efcf2eb07ead ]

In 'rt2880_pmx_group_enable' driver is printing an error and returning
-EBUSY if a pin has been already enabled. This begets anoying messages
in the caller when this happens like the following:

rt2880-pinmux pinctrl: pcie is already enabled
mt7621-pci 1e140000.pcie: Error applying setting, reverse things back

To avoid this just print the already enabled message in the pinctrl
driver and return 0 instead to not confuse the user with a real
bad problem.

Signed-off-by: Sergio Paracuellos <>
Signed-off-by: Linus Walleij <>
Signed-off-by: Sasha Levin <>
 drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
index d0f06790d38f..0ba4e4e070a9 100644
--- a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
+++ b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
@@ -127,7 +127,7 @@ static int rt2880_pmx_group_enable(struct pinctrl_dev *pctrldev,
 	if (p->groups[group].enabled) {
 		dev_err(p->dev, "%s is already enabled\n",
-		return -EBUSY;
+		return 0;
 	p->groups[group].enabled = 1;

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