diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2020-11-20 13:25:43 +0300 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2020-11-24 11:31:21 +0300 |
| commit | 4270d6f60d68e99e2fefd4da98eead05d2df022c (patch) | |
| tree | 1969fbf9e7e889ff5bbe24246f49648eb70dc7c6 /drivers/gpu/drm/drm_fb_helper.c | |
| parent | 1d46491d4a08d7ee657e09808f87d169444a2652 (diff) | |
| download | linux-4270d6f60d68e99e2fefd4da98eead05d2df022c.tar.xz | |
drm/fb-helper: Restore damage area upon errors
If the damage handling fails, restore the damage area. The next invocation
of the damage worker will then perform the update.
v3:
* Use drm_WARN_ONCE() with an error message to print warning
v2:
* print a single warning if dirty callback fails (Daniel, Sebastian)
* update comment
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201120102545.4047-9-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index fc709bc59b1a..314352683447 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -432,11 +432,28 @@ static void drm_fb_helper_damage_work(struct work_struct *work) if (helper->buffer) { ret = drm_fb_helper_damage_blit(helper, &clip_copy); if (drm_WARN_ONCE(dev, ret, "Damage blitter failed: ret=%d\n", ret)) - return; + goto err; + } + + if (helper->fb->funcs->dirty) { + ret = helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, &clip_copy, 1); + if (drm_WARN_ONCE(dev, ret, "Dirty helper failed: ret=%d\n", ret)) + goto err; } - if (helper->fb->funcs->dirty) - helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, &clip_copy, 1); + return; + +err: + /* + * Restore damage clip rectangle on errors. The next run + * of the damage worker will perform the update. + */ + spin_lock_irqsave(&helper->damage_lock, flags); + clip->x1 = min_t(u32, clip->x1, clip_copy.x1); + clip->y1 = min_t(u32, clip->y1, clip_copy.y1); + clip->x2 = max_t(u32, clip->x2, clip_copy.x2); + clip->y2 = max_t(u32, clip->y2, clip_copy.y2); + spin_unlock_irqrestore(&helper->damage_lock, flags); } /** |