linux-kernel - [PATCH] drm/i915/gvt: Fix error handling bug in perform_bb

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Date:   Sun, 15 Oct 2017 23:17:55 +0100
From:   Christos Gkekas <chris.gekas@...il.com>
To:     fred gao <fred.gao@...el.com>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        Zhi Wang <zhi.a.wang@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        intel-gvt-dev@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Cc:     Christos Gkekas <chris.gekas@...il.com>
Subject: [PATCH] drm/i915/gvt: Fix error handling bug in perform_bb_shadow

Change the type of variable 'bb_size' from uint32_t to int to be able to
hold error return values from find_bb_size(). This change seems to have
been missed from previous commit 1e3197d6ad73.

Signed-off-by: Christos Gkekas <chris.gekas@...il.com>
---
 drivers/gpu/drm/i915/gvt/cmd_parser.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c
index 2c0ccbb..f41cbf6 100644
--- a/drivers/gpu/drm/i915/gvt/cmd_parser.c
+++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c
@@ -1628,7 +1628,7 @@ static int perform_bb_shadow(struct parser_exec_state *s)
 	struct intel_shadow_bb_entry *entry_obj;
 	struct intel_vgpu *vgpu = s->vgpu;
 	unsigned long gma = 0;
-	uint32_t bb_size;
+	int bb_size;
 	void *dst = NULL;
 	int ret = 0;
 
-- 
2.7.4