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drm/gem-dma: revert the 8-byte alignment constraint

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Using drm_mode_size_dumb() to compute the size of dumb buffers introduced
an 8-byte alignment constraint on the pitch that wasn’t present before.
Let’s remove this constraint, which isn’t necessarily required and may
cause buffers to be allocated larger than needed.

Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: dcacfcd35cef ("drm/gem-dma: Compute dumb-buffer sizes with drm_mode_size_dumb()")
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20251126-lcd_pitch_alignment-v1-1-991610a1e369@microchip.com
This commit is contained in:
Ludovic Desroches 2025-11-26 15:44:44 +01:00 committed by Thomas Zimmermann
parent eec7e23d84
commit 56715b45e3
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/drm_gem_dma_helper.c
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@ -308,7 +308,7 @@ int drm_gem_dma_dumb_create(struct drm_file *file_priv,
struct drm_gem_dma_object *dma_obj;
int ret;
ret = drm_mode_size_dumb(drm, args, SZ_8, 0);
ret = drm_mode_size_dumb(drm, args, 0, 0);
if (ret)
return ret;