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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-04-19 10:28:54 +0200 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2024-05-02 23:38:49 +0200 |
| commit | 87cb4a612a89690b123e68f6602d9f6581b03597 (patch) | |
| tree | 2c2002ee397445926dad01695f6498ef56fcd05e /drivers/gpu/drm | |
| parent | 2fa42fd910c4ede1ae9c18d535b425046fa49351 (diff) | |
| download | linux-stable-87cb4a612a89690b123e68f6602d9f6581b03597.tar.gz linux-stable-87cb4a612a89690b123e68f6602d9f6581b03597.tar.bz2 linux-stable-87cb4a612a89690b123e68f6602d9f6581b03597.zip | |
drm/fbdev-generic: Do not set physical framebuffer address
Framebuffer memory is allocated via vzalloc() from non-contiguous
physical pages. The physical framebuffer start address is therefore
meaningless. Do not set it.
The value is not used within the kernel and only exported to userspace
on dedicated ARM configs. No functional change is expected.
v2:
- refer to vzalloc() in commit message (Javier)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: a5b44c4adb16 ("drm/fbdev-generic: Always use shadow buffering")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Zack Rusin <zackr@vmware.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: <stable@vger.kernel.org> # v6.4+
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Tested-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-2-tzimmermann@suse.de
(cherry picked from commit 73ef0aecba78aa9ebd309b10b6cd17d94e632892)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/drm_fbdev_generic.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_fbdev_generic.c b/drivers/gpu/drm/drm_fbdev_generic.c index be357f926fae..97e579c33d84 100644 --- a/drivers/gpu/drm/drm_fbdev_generic.c +++ b/drivers/gpu/drm/drm_fbdev_generic.c @@ -113,7 +113,6 @@ static int drm_fbdev_generic_helper_fb_probe(struct drm_fb_helper *fb_helper, /* screen */ info->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST; info->screen_buffer = screen_buffer; - info->fix.smem_start = page_to_phys(vmalloc_to_page(info->screen_buffer)); info->fix.smem_len = screen_size; /* deferred I/O */ |