Hi!
From: Dongliang Mu dzm91@hust.edu.cn
[ Upstream commit 3e5b3418827cefb5e1cc658806f02965791b8f07 ]
The commit 1149108e2fbf ("can: mscan: improve clock API use") only adds put_clock() in mpc5xxx_can_remove() function, forgetting to add put_clock() in the error handling code.
Fix this bug by adding put_clock() in the error handling code.
I believe this is wrong.
Fixes: 1149108e2fbf ("can: mscan: improve clock API use") Signed-off-by: Dongliang Mu dzm91@hust.edu.cn Link: https://lore.kernel.org/all/20221024133828.35881-1-mkl@pengutronix.de Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Sasha Levin sashal@kernel.org
drivers/net/can/mscan/mpc5xxx_can.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/net/can/mscan/mpc5xxx_can.c b/drivers/net/can/mscan/mpc5xxx_can.c index 2949a381a94d..21993ba7ae2a 100644 --- a/drivers/net/can/mscan/mpc5xxx_can.c +++ b/drivers/net/can/mscan/mpc5xxx_can.c @@ -336,14 +336,14 @@ static int mpc5xxx_can_probe(struct platform_device *ofdev) &mscan_clksrc); if (!priv->can.clock.freq) { dev_err(&ofdev->dev, "couldn't get MSCAN clock properties\n");
goto exit_free_mscan;
goto exit_put_clock;
In this case, get_clock() failed and usage count was not incremented. Yet we do put_clock(), which will lead to problems.
Best regards, Pavel