]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commitdiff
drm/i915/gvt: ensure -ve return value is handled correctly
authorColin Ian King <colin.king@canonical.com>
Tue, 19 Sep 2017 15:55:34 +0000 (16:55 +0100)
committerZhenyu Wang <zhenyuw@linux.intel.com>
Thu, 16 Nov 2017 03:46:52 +0000 (11:46 +0800)
An earlier fix changed the return type from find_bb_size however the
integer return is being assigned to a unsigned int so the -ve error
check will never be detected. Make bb_size an int to fix this.

Detected by CoverityScan CID#1456886 ("Unsigned compared against 0")

Fixes: 1e3197d6ad73 ("drm/i915/gvt: Refine error handling for perform_bb_shadow")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
drivers/gpu/drm/i915/gvt/cmd_parser.c

index 885cccf708ac780c2d1d53431ba146113f50e96d..cd2681a23fcd59617c6dc8d65566b20459e0c529 100644 (file)
@@ -1650,7 +1650,7 @@ 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;