[PATCH AUTOSEL 5.12 066/102] i3c: master: svc: drop free_irq of devm_request_irq allocated irq

Sasha Levin
2021-07-14T19:47:47Z

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit 59a61e69c4252b4e8ecd15e752b0d2337f0121b7 ]

irq allocated with devm_request_irq() will be freed in devm_irq_release(),
using free_irq() in ->remove() will causes a dangling pointer, and a
subsequent double free. So remove the free_irq() in svc_i3c_master_remove().

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210602084935.3977636-1-yangyingliang@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/i3c/master/svc-i3c-master.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
index 8d990696676e..014936120f4a 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -1449,7 +1449,6 @@ static int svc_i3c_master_remove(struct platform_device *pdev)
if (ret)
return ret;

- free_irq(master->irq, master);
clk_disable_unprepare(master->pclk);
clk_disable_unprepare(master->fclk);
clk_disable_unprepare(master->sclk);
--
2.30.2