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drm/client: Add client free callback to unprepare fb_helper

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Add free callback to struct drm_client_funcs. Invoke function to
free the client memory as part of the release process. Implement
free for fbdev emulation.

Fbdev emulation allocates and prepares client memory in
drm_fbdev_client_setup(). The release happens in fb_destroy from
struct fb_ops. Multiple implementations of this callback exist in
the various drivers that provide an fbdev implementation. Each of
them needs to follow the implementation details of the fbdev setup
code.

Adding a free callback for the client puts the unprepare and release
of the fbdev client in a single place.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> # core, msm
Acked-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # omapdrm
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> # gma500
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20251009132006.45834-2-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2025-10-09 15:16:28 +02:00
parent 550f4dd2ce
commit a16f6ba43d
14 changed files with 29 additions and 27 deletions
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4
drivers/gpu/drm/drm_fbdev_dma.c
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@@ -57,8 +57,6 @@ static void drm_fbdev_dma_fb_destroy(struct fb_info *info)
drm_client_buffer_vunmap(fb_helper->buffer);
drm_client_framebuffer_delete(fb_helper->buffer);
drm_client_release(&fb_helper->client);
drm_fb_helper_unprepare(fb_helper);
kfree(fb_helper);
}
static const struct fb_ops drm_fbdev_dma_fb_ops = {
@@ -92,8 +90,6 @@ static void drm_fbdev_dma_shadowed_fb_destroy(struct fb_info *info)
drm_client_buffer_vunmap(fb_helper->buffer);
drm_client_framebuffer_delete(fb_helper->buffer);
drm_client_release(&fb_helper->client);
drm_fb_helper_unprepare(fb_helper);
kfree(fb_helper);
}
static const struct fb_ops drm_fbdev_dma_shadowed_fb_ops = {