diff options
| author | Ma Ke <make24@iscas.ac.cn> | 2025-10-22 19:47:20 +0800 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2025-11-14 17:58:26 +0100 |
| commit | 4c5376b4b143c4834ebd392aef2215847752b16a (patch) | |
| tree | b503407ce4593857cc67821821ebbc1df2ccbd97 | |
| parent | 0a4a18e888ae8c8004582f665c5792c84a681668 (diff) | |
| download | net-4c5376b4b143c4834ebd392aef2215847752b16a.tar.gz | |
drm/tegra: dc: Fix reference leak in tegra_dc_couple()
driver_find_device() calls get_device() to increment the reference
count once a matching device is found, but there is no put_device() to
balance the reference count. To avoid reference count leakage, add
put_device() to decrease the reference count.
Found by code review.
Cc: stable@vger.kernel.org
Fixes: a31500fe7055 ("drm/tegra: dc: Restore coupling of display controllers")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Acked-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patch.msgid.link/20251022114720.24937-1-make24@iscas.ac.cn
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 59d5c1ba145a82..6c84bd69b11ff4 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -3148,6 +3148,7 @@ static int tegra_dc_couple(struct tegra_dc *dc) dc->client.parent = &parent->client; dev_dbg(dc->dev, "coupled to %s\n", dev_name(companion)); + put_device(companion); } return 0; |