This should go to stable as well. Forgot to add the stable cc.
Alex
On Fri, Apr 9, 2010 at 2:41 PM, Alex Deucher <alexdeuc...@gmail.com> wrote:
> From 44cc309323e38fc4fa7b7c7bea190aeaa0abd224 Mon Sep 17 00:00:00 2001
> From: Alex Deucher <alexdeuc...@gmail.com>
> Date: Fri, 9 Apr 2010 14:27:18 -0400
> Subject: [PATCH] drm/radeon/kms: more atom parser fixes
>
> shr/shl ops need the full dst rather than the pre-masked
> version. Fixes fdo bug 27478 and kernel bug 15738.
>
> Signed-off-by: Alex Deucher <alexdeuc...@gmail.com>
> ---
> drivers/gpu/drm/radeon/atom.c | 12 ++++++++++--
> 1 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
> index 58845e0..44c8cbd 100644
> --- a/drivers/gpu/drm/radeon/atom.c
> +++ b/drivers/gpu/drm/radeon/atom.c
> @@ -905,13 +905,17 @@ static void
> atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg)
> static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg)
> {
> uint8_t attr = U8((*ptr)++), shift;
> - uint32_t saved, dst;
> + uint32_t saved, dst, tmp;
> 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);
> + 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);
> }
> @@ -919,13 +923,17 @@ static void atom_op_shl(atom_exec_context *ctx,
> int *ptr, int arg)
> static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg)
> {
> uint8_t attr = U8((*ptr)++), shift;
> - uint32_t saved, dst;
> + uint32_t saved, dst, tmp;
> 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);
> + 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);
> }
> --
> 1.5.6.3
>
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