]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/commitdiff
drm/radeon/kms: fix vram base calculation on rs780/rs880
authorAlex Deucher <alexdeucher@gmail.com>
Fri, 3 Dec 2010 19:37:22 +0000 (14:37 -0500)
committerDave Airlie <airlied@redhat.com>
Tue, 7 Dec 2010 23:35:05 +0000 (09:35 +1000)
Avoid overflowing a 32 bit value.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
drivers/gpu/drm/radeon/r600.c

index a3552594ccc44c69b398980e539daf348d62322a..a322d4f647bd2cbe479f6b482f1249ada5de454e 100644 (file)
@@ -1195,8 +1195,10 @@ void r600_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
                                mc->vram_end, mc->real_vram_size >> 20);
        } else {
                u64 base = 0;
-               if (rdev->flags & RADEON_IS_IGP)
-                       base = (RREG32(MC_VM_FB_LOCATION) & 0xFFFF) << 24;
+               if (rdev->flags & RADEON_IS_IGP) {
+                       base = RREG32(MC_VM_FB_LOCATION) & 0xFFFF;
+                       base <<= 24;
+               }
                radeon_vram_location(rdev, &rdev->mc, base);
                rdev->mc.gtt_base_align = 0;
                radeon_gtt_location(rdev, mc);