drm/i915/gvt: remove the unused end parameter from calc_index()

All callers of calc_index() pass 0 for the end parameter. Remove it.

Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhi Wang <zhi.wang.linux@gmail.com>
Cc: intel-gvt-dev@lists.freedesktop.org
Reviewed-by: Zhi Wang <zhiwang@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/aaa24a5cbcf876d3b95e0f5f6594f972a860b6bc.1717773890.git.jani.nikula@intel.comSigned-off-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/gvt/handlers.c

@@ -881,12 +881,11 @@ static int check_fdi_rx_train_status(struct intel_vgpu *vgpu,
 #define INVALID_INDEX (~0U)
 
 static unsigned int calc_index(unsigned int offset, unsigned int start,
-	unsigned int next, unsigned int end, i915_reg_t i915_end)
+			       unsigned int next, i915_reg_t _end)
 {
+	u32 end = i915_mmio_reg_offset(_end);
 	unsigned int range = next - start;
 
-	if (!end)
-		end = i915_mmio_reg_offset(i915_end);
 	if (offset < start || offset > end)
 		return INVALID_INDEX;
 	offset -= start;
@@ -894,13 +893,13 @@ static unsigned int calc_index(unsigned int offset, unsigned int start,
 }
 
 #define FDI_RX_CTL_TO_PIPE(offset) \
-	calc_index(offset, _FDI_RXA_CTL, _FDI_RXB_CTL, 0, FDI_RX_CTL(PIPE_C))
+	calc_index(offset, _FDI_RXA_CTL, _FDI_RXB_CTL, FDI_RX_CTL(PIPE_C))
 
 #define FDI_TX_CTL_TO_PIPE(offset) \
-	calc_index(offset, _FDI_TXA_CTL, _FDI_TXB_CTL, 0, FDI_TX_CTL(PIPE_C))
+	calc_index(offset, _FDI_TXA_CTL, _FDI_TXB_CTL, FDI_TX_CTL(PIPE_C))
 
 #define FDI_RX_IMR_TO_PIPE(offset) \
-	calc_index(offset, _FDI_RXA_IMR, _FDI_RXB_IMR, 0, FDI_RX_IMR(PIPE_C))
+	calc_index(offset, _FDI_RXA_IMR, _FDI_RXB_IMR, FDI_RX_IMR(PIPE_C))
 
 static int update_fdi_rx_iir_status(struct intel_vgpu *vgpu,
 		unsigned int offset, void *p_data, unsigned int bytes)
@@ -944,7 +943,7 @@ static int update_fdi_rx_iir_status(struct intel_vgpu *vgpu,
 }
 
 #define DP_TP_CTL_TO_PORT(offset) \
-	calc_index(offset, _DP_TP_CTL_A, _DP_TP_CTL_B, 0, DP_TP_CTL(PORT_E))
+	calc_index(offset, _DP_TP_CTL_A, _DP_TP_CTL_B, DP_TP_CTL(PORT_E))
 
 static int dp_tp_ctl_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 		void *p_data, unsigned int bytes)
@@ -1008,7 +1007,7 @@ static int south_chicken2_mmio_write(struct intel_vgpu *vgpu,
 }
 
 #define DSPSURF_TO_PIPE(offset) \
-	calc_index(offset, _DSPASURF, _DSPBSURF, 0, DSPSURF(dev_priv, PIPE_C))
+	calc_index(offset, _DSPASURF, _DSPBSURF, DSPSURF(dev_priv, PIPE_C))
 
 static int pri_surf_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 		void *p_data, unsigned int bytes)
@@ -1031,7 +1030,7 @@ static int pri_surf_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 }
 
 #define SPRSURF_TO_PIPE(offset) \
-	calc_index(offset, _SPRA_SURF, _SPRB_SURF, 0, SPRSURF(PIPE_C))
+	calc_index(offset, _SPRA_SURF, _SPRB_SURF, SPRSURF(PIPE_C))
 
 static int spr_surf_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 		void *p_data, unsigned int bytes)