From: Thomas Zimmermann tzimmermann@suse.de
stable inclusion from stable-v6.6.34 commit bd2ad553f18c43acd57d1ea46c59a1ecd860cea6 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAD6H2
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 87cb4a612a89690b123e68f6602d9f6581b03597 upstream.
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-tzimmerm... (cherry picked from commit 73ef0aecba78aa9ebd309b10b6cd17d94e632892) Signed-off-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Wang Hai wanghai38@huawei.com --- drivers/gpu/drm/drm_fbdev_generic.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_fbdev_generic.c b/drivers/gpu/drm/drm_fbdev_generic.c index d647d89764cb..b4659cd6285a 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 */