From 514c54f85c8e6ab6f7de36ee19858197edbd4f85 Mon Sep 17 00:00:00 2001 From: hjc Date: Mon, 13 Apr 2015 11:13:32 +0800 Subject: [PATCH] rk fb: do something when user set invalid config Signed-off-by: hjc --- drivers/video/rockchip/rk_fb.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/video/rockchip/rk_fb.c b/drivers/video/rockchip/rk_fb.c index 53804baaa5b5..f9f4936a6838 100644 --- a/drivers/video/rockchip/rk_fb.c +++ b/drivers/video/rockchip/rk_fb.c @@ -2196,6 +2196,9 @@ static int rk_fb_set_win_config(struct fb_info *info, } } + if (regs->win_num <= 0) + goto err_null_frame; + mutex_lock(&dev_drv->output_lock); dev_drv->timeline_max++; @@ -2266,6 +2269,13 @@ static int rk_fb_set_win_config(struct fb_info *info, err: mutex_unlock(&dev_drv->output_lock); return ret; +err_null_frame: + kfree(regs); + for (j = 0; j < RK_MAX_BUF_NUM; j++) + win_data->rel_fence_fd[j] = -1; + win_data->ret_fence_fd = -1; + pr_info("win num = %d,null frame\n", regs->win_num); + return 0; } #if 1 -- 2.34.1