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fbdev: Remove unused struct fb_deferred_io .first_io field 

This optional callback was added in the commit 1f45f9dbb3 ("fb_defio:
add first_io callback") but it was never used by a driver. Let's remove
it since it's unlikely that will be used after a decade that was added.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230121192418.2814955-2-javierm@redhat.com
This commit is contained in:
Javier Martinez Canillas 2023-01-21 20:24:16 +01:00
parent 8681e36634
commit 998101f2a7
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2 changed files with 0 additions and 5 deletions
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4
drivers/video/fbdev/core/fb_defio.c
View File

@ -157,10 +157,6 @@ static vm_fault_t fb_deferred_io_track_page(struct fb_info *info, unsigned long
/* protect against the workqueue changing the page list */
mutex_lock(&fbdefio->lock);
/* first write in this cycle, notify the driver */
if (fbdefio->first_io && list_empty(&fbdefio->pagereflist))
fbdefio->first_io(info);
pageref = fb_deferred_io_pageref_get(info, offset, page);
if (WARN_ON_ONCE(!pageref)) {
ret = VM_FAULT_OOM;

1
include/linux/fb.h
View File

@ -215,7 +215,6 @@ struct fb_deferred_io {
struct mutex lock; /* mutex that protects the pageref list */
struct list_head pagereflist; /* list of pagerefs for touched pages */
/* callback */
void (*first_io)(struct fb_info *info);
void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
};
#endif