linux-kernel - [PATCH] drm/vmwgfx: Fix handling of errors returned by 'vmw_cotable

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Date:   Tue, 29 Nov 2016 07:49:19 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     linux-graphics-maintainer@...are.com, syeh@...are.com,
        thellstrom@...are.com, airlied@...ux.ie
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] drm/vmwgfx: Fix handling of errors returned by 'vmw_cotable_alloc()'

'vmw_cotable_alloc()' returns an error pointer on error, not NULL.
Propagate the error code, instead of returning -ENOMEM unconditionally

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_context.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
index 443d1ed00de7..d1aee9860033 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
@@ -209,8 +209,8 @@ static int vmw_gb_context_init(struct vmw_private *dev_priv,
 		for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
 			uctx->cotables[i] = vmw_cotable_alloc(dev_priv,
 							      &uctx->res, i);
-			if (unlikely(uctx->cotables[i] == NULL)) {
-				ret = -ENOMEM;
+			if (unlikely(IS_ERR(uctx->cotables[i]))) {
+				ret = PTR_ERR(uctx->cotables[i]);
 				goto out_cotables;
 			}
 		}
-- 
2.9.3