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| author | Thierry Reding <treding@nvidia.com> | 2013-11-08 11:30:37 (GMT) |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2013-12-03 09:04:15 (GMT) |
| commit | 37826519c4dca037bda5d008b4d687c2e6f8d405 (patch) | |
| tree | a3906601434c9cad929cf37ab6545d86e393c0f2 /drivers/gpu/drm/tegra/drm.h | |
| parent | 43dd5554fc4e0aa3c29df24aa9dbc7a610fb9e36 (diff) | |
| download | linux-37826519c4dca037bda5d008b4d687c2e6f8d405.tar.xz | |
drm/tegra: Make CRTC upcasting safer
When upcasting a NULL CRTC object, propagate the NULL pointer instead of
some invalid pointer. This allows subsequent code to check that the cast
object is valid.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/drm.h')
| -rw-r--r-- | drivers/gpu/drm/tegra/drm.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index fdfe259..7da0b92 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -116,7 +116,7 @@ host1x_client_to_dc(struct host1x_client *client) static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc) { - return container_of(crtc, struct tegra_dc, base); + return crtc ? container_of(crtc, struct tegra_dc, base) : NULL; } static inline void tegra_dc_writel(struct tegra_dc *dc, unsigned long value, |