aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorAlex Deucher <alexdeucher@gmail.com>2010-04-09 15:01:25 -0400
committerDave Airlie <airlied@redhat.com>2010-04-10 08:52:32 +1000
commit65384a1d41c4e91f0b49d90d11b7f424d6e5c58e (patch)
treee90155b8f5a77a1e30346ff24189572372fe5aa0 /drivers
parent930b9d94579fa1ea9604cbf7ba56cedf99ba9b5c (diff)
downloadmrst-s0i3-test-65384a1d41c4e91f0b49d90d11b7f424d6e5c58e.tar.gz
mrst-s0i3-test-65384a1d41c4e91f0b49d90d11b7f424d6e5c58e.tar.xz
mrst-s0i3-test-65384a1d41c4e91f0b49d90d11b7f424d6e5c58e.zip
drm/radeon/kms: more atom parser fixes (v2)
shr/shl ops need the full dst rather than the pre-masked version. Fixes fdo bug 27478 and kernel bug 15738. v2: remove some unsed vars, add comments Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/radeon/atom.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index 58845e053b3..a8bf5004246 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -907,11 +907,16 @@ static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg)
uint8_t attr = U8((*ptr)++), shift;
uint32_t saved, dst;
int dptr = *ptr;
+ uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3];
SDEBUG(" dst: ");
dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
+ /* op needs to full dst value */
+ dst = saved;
shift = atom_get_src(ctx, attr, ptr);
SDEBUG(" shift: %d\n", shift);
dst <<= shift;
+ dst &= atom_arg_mask[dst_align];
+ dst >>= atom_arg_shift[dst_align];
SDEBUG(" dst: ");
atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
}
@@ -921,11 +926,16 @@ static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg)
uint8_t attr = U8((*ptr)++), shift;
uint32_t saved, dst;
int dptr = *ptr;
+ uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3];
SDEBUG(" dst: ");
dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
+ /* op needs to full dst value */
+ dst = saved;
shift = atom_get_src(ctx, attr, ptr);
SDEBUG(" shift: %d\n", shift);
dst >>= shift;
+ dst &= atom_arg_mask[dst_align];
+ dst >>= atom_arg_shift[dst_align];
SDEBUG(" dst: ");
atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
}