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drm/gud: don't keep a connector without a CRTC as connector_state

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If the 'for_each_new_connector_in_state()' loop finishes without
hitting the break, connector_state is left pointing at the last
connector visited, which has no CRTC, instead of
staying NULL.

That skips the "if (!connector_state)" fallback below the loop, which
looks up the active connector when the state contains none. The
function then carries on with a connector that is not driven.

Fix by resetting connector_state to NULL for each connector visited that
has no CRTC, so that it is NULL when none was found and the fallback runs.

Fixes: 40e1a70b4a ("drm: Add GUD USB Display driver")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Link: https://sashiko.dev/#/patchset/20260902123254.36987-1-sajal2005gupta@gmail.com?part=1
Signed-off-by: Sajal Gupta <sajal2005gupta@gmail.com>
Acked-by: Ruben Wauters <rubenru09@aol.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Ruben Wauters <rubenru09@aol.com>
Link: https://patch.msgid.link/20260922084026.15481-1-sajal2005gupta@gmail.com
This commit is contained in:
Sajal Gupta 2026-09-22 14:10:08 +05:30 committed by Ruben Wauters
parent bca45af599
commit 71ec70ea26
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drivers/gpu/drm/gud/gud_pipe.c
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@ -507,6 +507,7 @@ int gud_plane_atomic_check(struct drm_plane *plane,
for_each_new_connector_in_state(state, connector, connector_state, i) {
if (connector_state->crtc)
break;
connector_state = NULL;
}
/*