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fbdev: Rework fb_blank()

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Reimplement fb_blank() to return early on errors. No functional
changes. Prepares the helper for tracking the blanking state in
struct fb_info.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Simona Vetter <simona.vetter@ffwll.ch>
Link: https://lore.kernel.org/r/20250321095517.313713-2-tzimmermann@suse.de
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Thomas Zimmermann
2025-03-21 10:53:54 +01:00
committed by Lee Jones
parent 0af2f6be1b
commit 93e41f968d
1 changed files with 10 additions and 8 deletions
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18
drivers/video/fbdev/core/fbmem.c
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@@ -339,11 +339,13 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
}
EXPORT_SYMBOL(fb_set_var);
int
fb_blank(struct fb_info *info, int blank)
int fb_blank(struct fb_info *info, int blank)
{
struct fb_event event;
int ret = -EINVAL;
int ret;
if (!info->fbops->fb_blank)
return -EINVAL;
if (blank > FB_BLANK_POWERDOWN)
blank = FB_BLANK_POWERDOWN;
@@ -351,13 +353,13 @@ fb_blank(struct fb_info *info, int blank)
event.info = info;
event.data = &blank;
if (info->fbops->fb_blank)
ret = info->fbops->fb_blank(blank, info);
ret = info->fbops->fb_blank(blank, info);
if (ret)
return ret;
if (!ret)
fb_notifier_call_chain(FB_EVENT_BLANK, &event);
fb_notifier_call_chain(FB_EVENT_BLANK, &event);
return ret;
return 0;
}
EXPORT_SYMBOL(fb_blank);