linux-kernel - [PATCH 4.9 09/66] drm/vc4: fix a bounds check

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Date:   Tue, 31 Jan 2017 06:36:13 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Eric Engestrom <eric@...estrom.ch>,
        Eric Anholt <eric@...olt.net>
Subject: [PATCH 4.9 09/66] drm/vc4: fix a bounds check

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

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

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 21ccc32496b2f63228f5232b3ac0e426e8fb3c31 upstream.

We accidentally return success even if vc4_full_res_bounds_check() fails.

Fixes: d5b1a78a772f ("drm/vc4: Add support for drawing 3D frames.")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Eric Engestrom <eric@...estrom.ch>
Reviewed-by: Eric Anholt <eric@...olt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/vc4/vc4_render_cl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/vc4/vc4_render_cl.c
+++ b/drivers/gpu/drm/vc4/vc4_render_cl.c
@@ -461,7 +461,7 @@ static int vc4_rcl_surface_setup(struct
 		}
 
 		ret = vc4_full_res_bounds_check(exec, *obj, surf);
-		if (!ret)
+		if (ret)
 			return ret;
 
 		return 0;