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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2021-08-06 12:15:13 +0300 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-08-11 00:24:31 +0300 |
| commit | 6977cc89c87506ff17e6c05f0e37f46752256e82 (patch) | |
| tree | 34243bfc99a58fcdb8fa659c98da6df0ffcba370 /drivers/gpu/drm/msm/dsi/dsi.c | |
| parent | f3a6b02c950a1b9d5c6de9740b98128b45dcd794 (diff) | |
| download | linux-6977cc89c87506ff17e6c05f0e37f46752256e82.tar.xz | |
drm/msm/dsi: Fix some reference counted resource leaks
'of_find_device_by_node()' takes a reference that must be released when
not needed anymore.
This is expected to be done in 'dsi_destroy()'.
However, there are 2 issues in 'dsi_get_phy()'.
First, if 'of_find_device_by_node()' succeeds but 'platform_get_drvdata()'
returns NULL, 'msm_dsi->phy_dev' will still be NULL, and the reference
won't be released in 'dsi_destroy()'.
Secondly, as 'of_find_device_by_node()' already takes a reference, there is
no need for an additional 'get_device()'.
Move the assignment to 'msm_dsi->phy_dev' a few lines above and remove the
unneeded 'get_device()' to solve both issues.
Fixes: ec31abf6684e ("drm/msm/dsi: Separate PHY to another platform device")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/f15bc57648a00e7c99f943903468a04639d50596.1628241097.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/dsi.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/dsi.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index 77c8dba297d8..614dc7f26f2c 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -33,8 +33,10 @@ static int dsi_get_phy(struct msm_dsi *msm_dsi) } phy_pdev = of_find_device_by_node(phy_node); - if (phy_pdev) + if (phy_pdev) { msm_dsi->phy = platform_get_drvdata(phy_pdev); + msm_dsi->phy_dev = &phy_pdev->dev; + } of_node_put(phy_node); @@ -43,8 +45,6 @@ static int dsi_get_phy(struct msm_dsi *msm_dsi) return -EPROBE_DEFER; } - msm_dsi->phy_dev = get_device(&phy_pdev->dev); - return 0; } |