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Date: Wed, 05 Jan 2011 16:21:50 -0800 From: Greg KH <gregkh@...e.de> To: linux-kernel@...r.kernel.org, stable@...nel.org Cc: stable-review@...nel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, Alex Deucher <alexdeucher@...il.com>, Dave Airlie <airlied@...hat.com> Subject: [011/152] drm/radeon/kms: fix vram base calculation on rs780/rs880 2.6.36-stable review patch. If anyone has any objections, please let us know. ------------------ From: Alex Deucher <alexdeucher@...il.com> commit 8961d52d4cc52edf5672f8f2712c57162b736793 upstream. Avoid overflowing a 32 bit value. Signed-off-by: Alex Deucher <alexdeucher@...il.com> Signed-off-by: Dave Airlie <airlied@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- drivers/gpu/drm/radeon/r600.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -1198,8 +1198,10 @@ void r600_vram_gtt_location(struct radeo 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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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