video: rockchip: fb: fix update reg kfree data lead to list_del null point

Change-Id: I5a9f3c795cf6f8ecbe9f45a769135fe890525fab
Signed-off-by: Huang Jiachai <hjc@rock-chips.com>
(cherry picked from commit fe05c53704fb3b61455dddbae8b5078be0f48a12)

diff --git a/drivers/video/rockchip/rk_fb.c b/drivers/video/rockchip/rk_fb.c
index e8eeda5e0764083f319ca5c7196bea8b629ab9e2..9fb1a5eeb20f76b6f27e35d70d18f517a9c1ba94 100644 (file)
--- a/drivers/video/rockchip/rk_fb.c
+++ b/drivers/video/rockchip/rk_fb.c
@@ -1940,8 +1940,8 @@ static void rk_fb_update_regs_handler(struct kthread_work *work)
        mutex_unlock(&dev_drv->update_regs_list_lock);
 
        list_for_each_entry_safe(data, next, &dev_drv->saved_list, list) {
-               rk_fb_update_reg(dev_drv, data);
                list_del(&data->list);
+               rk_fb_update_reg(dev_drv, data);
        }
 
        if (dev_drv->wait_fs && list_empty(&dev_drv->update_regs_list))