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drm/msm: mark the fbdev framebuffer as system memory

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msm_fbdev_driver_fbdev_probe() points screen_buffer at a kernel virtual
mapping of the GEM object and uses the deferred sysmem fb ops, but never
sets FBINFO_VIRTFB. The framebuffer core then assumes the memory is not
in the virtual address space and warns on the first console draw:

  fb0: sys_fillrect: framebuffer is not in virtual address space.

The drm_fbdev_dma, drm_fbdev_shmem and drm_fbdev_ttm helpers all set the
flag for system memory. Do the same here.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Assisted-by: Claude:claude-opus-5
Patchwork: https://patchwork.freedesktop.org/patch/743293/
Link: https://lore.kernel.org/r/20260730-drm-msm-fbinfo-virt-v1-1-a27099a6dc58@oss.qualcomm.com
Acked-by: Rob Clark <robin.clark@oss.qualcomm.com> # on IRC
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Dmitry Baryshkov 2026-07-30 16:05:13 +03:00
parent ba970587a0
commit ea9dadeac7
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/msm/msm_fbdev.c
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@ -155,6 +155,7 @@ int msm_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
helper->fb = buffer->fb;
fbi->fbops = &msm_fb_ops;
fbi->flags |= FBINFO_VIRTFB; /* system memory */
drm_fb_helper_fill_info(fbi, helper, sizes);