[Intel-gfx] [PATCH 14/15] drm/i915/gvt: annotate maybe unused gma_bottom variables

[Wang, Zhi A]

On 5/27/2023 12:38 AM, Jani Nikula wrote:
> Prepare for re-enabling -Wunused-but-set-variable.
>
> Lacking a better idea, annotate the gma_bottom variables with
> __maybe_unused.
>
> Cc: Zhenyu Wang <zhenyuw at linux.intel.com>
> Cc: Zhi Wang <zhi.a.wang at intel.com>
> Cc: intel-gvt-dev at lists.freedesktop.org
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>
>
> ---
>
> Frankly I'm not sure what to do with these. Maybe the variables should
> be dropped altogether?

I sent an patch to fix the warnings. You can include that one in the 
series. Zhenyu, can you give an rb?

> ---
>   drivers/gpu/drm/i915/gvt/cmd_parser.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c
> index 3c4ae1da0d41..2801e17e5522 100644
> --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c
> +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c
> @@ -2833,7 +2833,7 @@ static int command_scan(struct parser_exec_state *s,
>   
>   static int scan_workload(struct intel_vgpu_workload *workload)
>   {
> -	unsigned long gma_head, gma_tail, gma_bottom;
> +	unsigned long gma_head, gma_tail, __maybe_unused gma_bottom;
>   	struct parser_exec_state s;
>   	int ret = 0;
>   
> @@ -2874,7 +2874,7 @@ static int scan_workload(struct intel_vgpu_workload *workload)
>   static int scan_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx)
>   {
>   
> -	unsigned long gma_head, gma_tail, gma_bottom, ring_size, ring_tail;
> +	unsigned long gma_head, gma_tail, __maybe_unused gma_bottom, ring_size, ring_tail;
>   	struct parser_exec_state s;
>   	int ret = 0;
>   	struct intel_vgpu_workload *workload = container_of(wa_ctx,