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| author | Noralf Trønnes <noralf@tronnes.org> | 2017-12-15 20:51:17 +0300 |
|---|---|---|
| committer | Noralf Trønnes <noralf@tronnes.org> | 2017-12-20 16:52:22 +0300 |
| commit | 48c9571c34b153abc1c4f2b431fa74490b671943 (patch) | |
| tree | 26ae43819c573a3be597c208e3cb9853edd1de87 /include/drm | |
| parent | 95b0137f28a420ac02826e674286bc363dd7c196 (diff) | |
| download | linux-48c9571c34b153abc1c4f2b431fa74490b671943.tar.xz | |
drm/fb-helper: Add drm_fb_helper_defio_init()
Add helper for initializing fbdev deferred I/O.
The cleanup could have happened in drm_fb_helper_fini(), but that would
have required me to set fb_info->fbdefio to NULL in a couple of drivers
before they call _fini() to avoid double defio cleanup. The problem is
that one of those is vboxvideo which lives in Greg's staging tree.
So I put the cleanup in drm_fb_helper_fbdev_teardown(), not perfect
but not that bad either.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171215175119.36181-6-noralf@tronnes.org
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_fb_helper.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index aa78ac3b8ad0..b069433e7fc1 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -276,6 +276,7 @@ void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper); void drm_fb_helper_deferred_io(struct fb_info *info, struct list_head *pagelist); +int drm_fb_helper_defio_init(struct drm_fb_helper *fb_helper); ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf, size_t count, loff_t *ppos); @@ -423,6 +424,11 @@ static inline void drm_fb_helper_deferred_io(struct fb_info *info, { } +static inline int drm_fb_helper_defio_init(struct drm_fb_helper *fb_helper) +{ + return -ENODEV; +} + static inline ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf, size_t count, loff_t *ppos) |