[patch] drm/radeon: remove some buggy dead code

[Alex Deucher]

On Wed, Oct 29, 2014 at 11:47 AM, Dan Carpenter
<dan.carpenter at oracle.com> wrote:
> The calculation of "num_shader_engines" has a precedence bug because
> the right shift happens before the mask, but this variable is never used
> so we can just delete it.
>
> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>

Applied in preference to Joe Perches's patch.

Thanks!

Alex

>
> diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
> index a31f1ca..f37d39d 100644
> --- a/drivers/gpu/drm/radeon/evergreen.c
> +++ b/drivers/gpu/drm/radeon/evergreen.c
> @@ -3005,7 +3005,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
>         u32 vgt_cache_invalidation;
>         u32 hdp_host_path_cntl, tmp;
>         u32 disabled_rb_mask;
> -       int i, j, num_shader_engines, ps_thread_count;
> +       int i, j, ps_thread_count;
>
>         switch (rdev->family) {
>         case CHIP_CYPRESS:
> @@ -3303,8 +3303,6 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
>         rdev->config.evergreen.tile_config |=
>                 ((gb_addr_config & 0x30000000) >> 28) << 12;
>
> -       num_shader_engines = (gb_addr_config & NUM_SHADER_ENGINES(3) >> 12) + 1;
> -
>         if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK)) {
>                 u32 efuse_straps_4;
>                 u32 efuse_straps_3;
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