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linux/drivers/gpu
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Samasth Norway Ananda 08441f10f4 drm/i915/gmbus: fix spurious timeout on 512-byte burst reads 
When reading exactly 512 bytes with burst read enabled, the
extra_byte_added path breaks out of the inner do-while without
decrementing len. The outer while(len) then re-enters and gmbus_wait()
times out since all data has been delivered. Decrement len before the
break so the outer loop terminates correctly.

Fixes: d5dc0f43f2 ("drm/i915/gmbus: Enable burst read")
Signed-off-by: Samasth Norway Ananda <samasth.norway.ananda@oracle.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patch.msgid.link/20260316231920.135438-2-samasth.norway.ananda@oracle.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 4ab0f09ee7)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
History 2026-03-23 09:06:36 +02:00
..
drm drm/i915/gmbus: fix spurious timeout on 512-byte burst reads 2026-03-23 09:06:36 +02:00
host1x Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
ipu-v3 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
nova-core gpu: nova-core: gsp: fix UB in DmaGspMem pointer accessors 2026-03-11 16:24:15 +01:00
trace gpu/trace: make TRACE_GPU_MEM configurable 2025-07-08 09:34:47 -07:00
vga Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
Makefile gpu: nova-core: add initial driver stub 2025-03-09 19:24:27 +01:00