drm/msm/dsi: Fix return value check in msm_dsi_host_set_display_mode()

In case of error, the function drm_mode_duplicate() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index ddc4c7d..f05ed0e 100644 (file)
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -2278,9 +2278,9 @@ int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
        }
 
        msm_host->mode = drm_mode_duplicate(msm_host->dev, mode);
-       if (IS_ERR(msm_host->mode)) {
+       if (!msm_host->mode) {
                pr_err("%s: cannot duplicate mode\n", __func__);
-               return PTR_ERR(msm_host->mode);
+               return -ENOMEM;
        }
 
        return 0;