github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-30 18:13:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

i2c: tegra: fix pm_runtime leak on mutex_lock failure

Browse Source 
If tegra_i2c_mutex_lock() fails, the function returns without calling
pm_runtime_put(), leaking the runtime PM reference acquired by the
preceding pm_runtime_get_sync(). This prevents the device from ever
entering runtime suspend.

Add the missing pm_runtime_put() before returning on lock failure.

Fixes: 6077cfd716 ("i2c: tegra: Add support for SW mutex register")
Signed-off-by: Saurav Sachidanand <sauravsc@amazon.com>
Cc: <stable@vger.kernel.org> # v7.0+
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260507221145.62183-2-sauravsc@amazon.com
This commit is contained in:
Saurav Sachidanand 2026-05-07 22:11:44 +00:00 committed by Andi Shyti
parent 5d6919055d
commit 57cf4e8d6a
No known key found for this signature in database
GPG Key ID: DA78056626D32D6E
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/i2c/busses/i2c-tegra.c
View File

@ -1666,8 +1666,10 @@ static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
}
ret = tegra_i2c_mutex_lock(i2c_dev);
if (ret)
if (ret) {
pm_runtime_put(i2c_dev->dev);
return ret;
}
for (i = 0; i < num; i++) {
enum msg_end_type end_type = MSG_END_STOP;