[Intel-gfx] [PATCH] drm/i915/gvt: remove unused variable gma_bottom in command parser

[Wang, Zhi A]

Remove unused variable gma_bottom in scan_workload() and scan_wa_ctx().
commit be1da7070aea ("drm/i915/gvt: vGPU command scanner") introduces
gma_bottom in several functions to calculate the size of the command
buffer. However, some of them are set but actually unused.

When compiling the code with ccflags -Wunused-but-set-variable, gcc
throws warnings.

Remove unused variables to avoid the gcc warnings. Tested via compiling
the code with ccflags -Wunused-but-set-variable.

Fixes: be1da7070aea ("drm/i915/gvt: vGPU command scanner")
Suggested-by: Jani Nikula <jani.nikula at intel.com>
Cc: Zhenyu Wang <zhenyuw at linux.intel.com>
Cc: intel-gvt-dev at lists.freedesktop.org
Signed-off-by: Zhi Wang <zhi.a.wang at intel.com>
---
  drivers/gpu/drm/i915/gvt/cmd_parser.c | 6 ++----
  1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c 
b/drivers/gpu/drm/i915/gvt/cmd_parser.c
index 3c4ae1da0d41..05f9348b7a9d 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;
  	struct parser_exec_state s;
  	int ret = 0;

@@ -2843,7 +2843,6 @@ static int scan_workload(struct 
intel_vgpu_workload *workload)

  	gma_head = workload->rb_start + workload->rb_head;
  	gma_tail = workload->rb_start + workload->rb_tail;
-	gma_bottom = workload->rb_start +  _RING_CTL_BUF_SIZE(workload->rb_ctl);

  	s.buf_type = RING_BUFFER_INSTRUCTION;
  	s.buf_addr_type = GTT_BUFFER;
@@ -2874,7 +2873,7 @@ 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, ring_size, ring_tail;
  	struct parser_exec_state s;
  	int ret = 0;
  	struct intel_vgpu_workload *workload = container_of(wa_ctx,
@@ -2891,7 +2890,6 @@ static int scan_wa_ctx(struct intel_shadow_wa_ctx 
*wa_ctx)
  			PAGE_SIZE);
  	gma_head = wa_ctx->indirect_ctx.guest_gma;
  	gma_tail = wa_ctx->indirect_ctx.guest_gma + ring_tail;
-	gma_bottom = wa_ctx->indirect_ctx.guest_gma + ring_size;

  	s.buf_type = RING_BUFFER_INSTRUCTION;
  	s.buf_addr_type = GTT_BUFFER;
-- 
2.25.1