drm/msm/dpu: relax parameter validation in encoders

DPU, being over protective, validates every parameter of a
module. This change traces the call stack for some of encoder
functions affected by previous set of clean up patches and
cleans up unwanted validations.

changes in v5:
	- Introduced in the series
changes in v6:
	- none
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c

@@ -441,12 +441,6 @@ void dpu_encoder_get_hw_resources(struct drm_encoder *drm_enc,
 	struct dpu_encoder_virt *dpu_enc = NULL;
 	int i = 0;
 
-	if (!hw_res || !drm_enc) {
-		DPU_ERROR("invalid argument(s), drm_enc %d, res %d\n",
-			  drm_enc != 0, hw_res != 0);
-		return;
-	}
-
 	dpu_enc = to_dpu_encoder_virt(drm_enc);
 	DPU_DEBUG_ENC(dpu_enc, "\n");
 

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c

@@ -601,20 +601,6 @@ static void dpu_encoder_phys_cmd_get_hw_resources(
 		struct dpu_encoder_phys *phys_enc,
 		struct dpu_encoder_hw_resources *hw_res)
 {
-	struct dpu_encoder_phys_cmd *cmd_enc =
-		to_dpu_encoder_phys_cmd(phys_enc);
-
-	if (!phys_enc) {
-		DPU_ERROR("invalid encoder\n");
-		return;
-	}
-
-	if ((phys_enc->intf_idx - INTF_0) >= INTF_MAX) {
-		DPU_ERROR("invalid intf idx:%d\n", phys_enc->intf_idx);
-		return;
-	}
-
-	DPU_DEBUG_CMDENC(cmd_enc, "\n");
 	hw_res->intfs[phys_enc->intf_idx - INTF_0] = INTF_MODE_CMD;
 }
 

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c

@@ -539,12 +539,6 @@ static void dpu_encoder_phys_vid_get_hw_resources(
 		struct dpu_encoder_phys *phys_enc,
 		struct dpu_encoder_hw_resources *hw_res)
 {
-	if (!phys_enc || !hw_res) {
-		DPU_ERROR("invalid arg(s), enc %d hw_res %d\n",
-			  phys_enc != 0, hw_res != 0);
-		return;
-	}
-
 	hw_res->intfs[phys_enc->intf_idx - INTF_0] = INTF_MODE_VIDEO;
 }