[ I'm not totally certain why this is showing up in my new warnings list
when it's half a year old. But it looks legit. - dan ]
Hello Thierry Reding,
This is a semi-automatic email about new static checker warnings.
The patch c4755fb9064f: "drm/tegra: Add Tegra186 display hub support"
from Nov 13, 2017, leads to the following Smatch complaint:
drivers/gpu/drm/tegra/hub.c:386 tegra_shared_plane_atomic_disable()
warn: variable dereferenced before check 'old_state' (see line 381)
drivers/gpu/drm/tegra/hub.c
380 {
381 struct tegra_dc *dc = to_tegra_dc(old_state->crtc);
^^^^^^^^^^^^^^^
382 struct tegra_plane *p = to_tegra_plane(plane);
383 u32 value;
384
385 /* rien ne va plus */
386 if (!old_state || !old_state->crtc)
^^^^^^^^^
387 return;
388
regards,
dan carpenter
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