drm/tegra: fix potential uninitialized variable use

jnikula · tdz · commit ba2b9de0c1ac · 2024-09-05T12:40:18.000+02:00
It's likely either output->drm_edid or output->ddc is non-NULL, but avoid the uninitialized variable usage anyway. Reported-by: kernel test robot <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/r/ZtXLyXxew7z6H2bD@stanley.mountain Fixes: 98365ca ("drm/tegra: convert to struct drm_edid") Cc: Thierry Reding <treding@nvidia.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: linux-tegra@vger.kernel.org Acked-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240902161317.2437148-1-jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com> (cherry picked from commit 8e514ba) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
@@ -21,7 +21,7 @@
 int tegra_output_connector_get_modes(struct drm_connector *connector)
 {
 	struct tegra_output *output = connector_to_output(connector);
-	const struct drm_edid *drm_edid;
+	const struct drm_edid *drm_edid = NULL;
 	int err = 0;
 
 	/*

Original file line number	Diff line number	Diff line change
`@@ -21,7 +21,7 @@`
`21`	`21`	`int tegra_output_connector_get_modes(struct drm_connector *connector)`
`22`	`22`	`{`
`23`	`23`	`struct tegra_output *output = connector_to_output(connector);`
`24`		`- const struct drm_edid *drm_edid;`
	`24`	`+ const struct drm_edid *drm_edid = NULL;`
`25`	`25`	`int err = 0;`
`26`	`26`
`27`	`27`	`/*`