linux-kernel - [PATCH 4.10 126/129] drm/hisilicon/hibmc: Fix wrong pointer passed to PTR

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Date:   Thu, 11 May 2017 16:12:54 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Wei Yongjun <weiyongjun1@...wei.com>,
        Gustavo Padovan <gustavo.padovan@...labora.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>
Subject: [PATCH 4.10 126/129] drm/hisilicon/hibmc: Fix wrong pointer passed to PTR_ERR()

4.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wei Yongjun <weiyongjun1@...wei.com>

commit bdf6f135973acb409b3ec5a6214fb597670a0bc0 upstream.

PTR_ERR should access the value just tested by IS_ERR, otherwise
the wrong error code will be returned.

Fixes: d1667b86795a ("drm/hisilicon/hibmc: Add support for frame buffer")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@...labora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@...ll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170112151921.16538-1-weiyj.lk@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c
@@ -121,7 +121,7 @@ static int hibmc_drm_fb_create(struct dr
 
 	hi_fbdev->fb = hibmc_framebuffer_init(priv->dev, &mode_cmd, gobj);
 	if (IS_ERR(hi_fbdev->fb)) {
-		ret = PTR_ERR(info);
+		ret = PTR_ERR(hi_fbdev->fb);
 		DRM_ERROR("failed to initialize framebuffer: %d\n", ret);
 		goto out_release_fbi;
 	}