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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sergio Paracuellos <sergio.paracuellos@gmail.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Sasha Levin <sashal@kernel.org>,
	linux-staging@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org
Subject: [PATCH AUTOSEL 4.19 04/12] pinctrl: ralink: rt2880: avoid to error in calls is pin is already enabled
Date: Tue, 15 Jun 2021 11:50:01 -0400	[thread overview]
Message-ID: <20210615155009.62894-4-sashal@kernel.org> (raw)
In-Reply-To: <20210615155009.62894-1-sashal@kernel.org>

From: Sergio Paracuellos <sergio.paracuellos@gmail.com>

[ 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 <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20210604055337.20407-1-sergio.paracuellos@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 80e7067cfb79..ad811c0438cc 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",
 			p->groups[group].name);
-		return -EBUSY;
+		return 0;
 	}
 
 	p->groups[group].enabled = 1;
-- 
2.30.2


           reply	other threads:[~2021-06-15 15:50 UTC|newest]

Thread overview: expand[flat|nested]  mbox.gz  Atom feed
 [parent not found: <20210615155009.62894-1-sashal@kernel.org>]

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