drm/panic: Retry in dispatch function if panic output fails

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On failed output of QR codes and kmsg buffers, fall back to a user
message. QR-code output already did this internally, but now formally
support it in drm_panic_dispatch(). Streamlines the existing logic.

With the implicit fallback removed from QR-code support, the tests
cases fail for thr smallest output size (300x200). This is because the
QR code requires a minimal output size. Increase the size to 494x494,
which is the minimum supported size for QR output.

v3:
- update outdated commit description (Sashiko)
v2:
- fix minimum test size (Sashiko)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260911124540.279841-9-tzimmermann@suse.de

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This commit is contained in:

Thomas Zimmermann 2026-09-11 14:44:01 +02:00

parent fbe42fd8cf

commit 2384981e42

2 changed files with 13 additions and 13 deletions

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24

drivers/gpu/drm/drm_panic.c

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2

drivers/gpu/drm/tests/drm_panic_test.c

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