UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/fb-helper: Check fb_deferred_io_init() return value 

The fb_deferred_io_init() can fail and return an errno code but currently
there is no check for its return value.

Fix that and propagate to errno to the caller in the case of a failure.

Fixes: d536540f30 ("drm/fb-helper: Add generic fbdev emulation .fb_probe function")
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230121192418.2814955-3-javierm@redhat.com
This commit is contained in:
Javier Martinez Canillas 2023-01-21 20:24:17 +01:00
parent 0220e4fe17
commit cc88ad784e
No known key found for this signature in database
GPG Key ID: C751E590D63F3D69
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/drm_fbdev_generic.c
View File

@ -223,7 +223,9 @@ static int drm_fbdev_fb_probe(struct drm_fb_helper *fb_helper,
fbi->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST;
fbi->fbdefio = &drm_fbdev_defio;
fb_deferred_io_init(fbi);
ret = fb_deferred_io_init(fbi);
if (ret)
return ret;
} else {
/* buffer is mapped for HW framebuffer */
ret = drm_client_buffer_vmap(fb_helper->buffer, &map);