fbdev: remove FBINFO_MISC_USEREVENT around fb_blank

With the recursion broken in the previous patch we can drop the
FBINFO_MISC_USEREVENT flag around calls to fb_blank - recursion
prevention was it's only job.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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: Hans de Goede <hdegoede@redhat.com>
Cc: Yisheng Xie <ysxie@foxmail.com>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Peter Rosin <peda@axentia.se>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190528090304.9388-27-daniel.vetter@ffwll.ch

drivers/video/fbdev/core/fbcon.c

@@ -2386,9 +2386,8 @@ static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
 			fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
 			ops->cursor_flash = (!blank);
 
-			if (!(info->flags & FBINFO_MISC_USEREVENT))
-				if (fb_blank(info, blank))
-					fbcon_generic_blank(vc, info, blank);
+			if (fb_blank(info, blank))
+				fbcon_generic_blank(vc, info, blank);
 		}
 
 		if (!blank)

drivers/video/fbdev/core/fbmem.c

@@ -1194,10 +1194,7 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
 	case FBIOBLANK:
 		console_lock();
 		lock_fb_info(info);
-		info->flags |= FBINFO_MISC_USEREVENT;
 		ret = fb_blank(info, arg);
-		info->flags &= ~FBINFO_MISC_USEREVENT;
-
 		/* might again call into fb_blank */
 		fbcon_fb_blanked(info, arg);
 		unlock_fb_info(info);

drivers/video/fbdev/core/fbsysfs.c

@@ -306,9 +306,7 @@ static ssize_t store_blank(struct device *device,
 
 	arg = simple_strtoul(buf, &last, 0);
 	console_lock();
-	fb_info->flags |= FBINFO_MISC_USEREVENT;
 	err = fb_blank(fb_info, arg);
-	fb_info->flags &= ~FBINFO_MISC_USEREVENT;
 	/* might again call into fb_blank */
 	fbcon_fb_blanked(fb_info, arg);
 	console_unlock();