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clk: Fix memory leak in devm_clk_notifier_register()

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[ Upstream commit 7fb933e56f ]

devm_clk_notifier_register() allocates a devres resource for clk
notifier but didn't register that to the device, so the notifier didn't
get unregistered on device detach and the allocated resource was leaked.

Fix the issue by registering the resource through devres_add().

This issue was found with kmemleak on a Chromebook.

Fixes: 6d30d50d03 ("clk: add devm variant of clk_notifier_register")
Signed-off-by: Fei Shao <fshao@chromium.org>
Link: https://lore.kernel.org/r/20230619112253.v2.1.I13f060c10549ef181603e921291bdea95f83033c@changeid
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Fei Shao
2023-06-19 11:22:53 +08:00
committed by Greg Kroah-Hartman
parent a0e7e33b8c
commit a326cf0107
1 changed files with 1 additions and 0 deletions
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drivers/clk/clk.c
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@@ -4504,6 +4504,7 @@ int devm_clk_notifier_register(struct device *dev, struct clk *clk,
if (!ret) {
devres->clk = clk;
devres->nb = nb;
devres_add(dev, devres);
} else {
devres_free(devres);
}