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fbdev: sysfs files can't disappear before the device is gone 

Which means lock_fb_info can never fail. Remove the error handling.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190528090304.9388-14-daniel.vetter@ffwll.ch
alistair/sunxi64-5.4-dsi
Daniel Vetter 2019-05-28 11:02:44 +02:00
parent 1e16eaebe2
commit 34f31f14c4
1 changed files with 2 additions and 8 deletions
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10
drivers/video/fbdev/core/fbsysfs.c
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@ -175,10 +175,7 @@ static ssize_t store_modes(struct device *device,
return -EINVAL;
console_lock();
if (!lock_fb_info(fb_info)) {
console_unlock();
return -ENODEV;
}
lock_fb_info(fb_info);
list_splice(&fb_info->modelist, &old_list);
fb_videomode_to_modelist((const struct fb_videomode *)buf, i,
@ -405,10 +402,7 @@ static ssize_t store_fbstate(struct device *device,
state = simple_strtoul(buf, &last, 0);
console_lock();
if (!lock_fb_info(fb_info)) {
console_unlock();
return -ENODEV;
}
lock_fb_info(fb_info);
fb_set_suspend(fb_info, (int)state);