linux-kernel - [PATCH] drm/i915/display: Convert i9xx_pipe_crc_auto

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Message-ID: <Y8K2SS/zNiPAmLsS@ubun2204.myguest.virtualbox.org>
Date:   Sat, 14 Jan 2023 19:33:53 +0530
From:   Deepak R Varma <drv@...lo.com>
To:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Cc:     Saurabh Singh Sengar <ssengar@...rosoft.com>,
        Praveen Kumar <kumarpraveen@...ux.microsoft.com>
Subject: [PATCH] drm/i915/display: Convert i9xx_pipe_crc_auto_source to void

Convert function i9xx_pipe_crc_auto_source() to return void instead
of int since the current implementation always returns 0 to the caller.
Issue identified using returnvar Coccinelle semantic patch.

Signed-off-by: Deepak R Varma <drv@...lo.com>
---
Please note: The change is compile tested only.


 drivers/gpu/drm/i915/display/intel_pipe_crc.c | 23 ++++++-------------
 1 file changed, 7 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.c b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
index e9774670e3f6..8d3ea8d7b737 100644
--- a/drivers/gpu/drm/i915/display/intel_pipe_crc.c
+++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
@@ -72,14 +72,13 @@ static int i8xx_pipe_crc_ctl_reg(enum intel_pipe_crc_source *source,
 	return 0;
 }
 
-static int i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
-				     enum pipe pipe,
-				     enum intel_pipe_crc_source *source)
+static void i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
+				      enum pipe pipe,
+				      enum intel_pipe_crc_source *source)
 {
 	struct intel_encoder *encoder;
 	struct intel_crtc *crtc;
 	struct intel_digital_port *dig_port;
-	int ret = 0;
 
 	*source = INTEL_PIPE_CRC_SOURCE_PIPE;
 
@@ -121,8 +120,6 @@ static int i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
 		}
 	}
 	drm_modeset_unlock_all(&dev_priv->drm);
-
-	return ret;
 }
 
 static int vlv_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
@@ -132,11 +129,8 @@ static int vlv_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
 {
 	bool need_stable_symbols = false;
 
-	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
-		int ret = i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
-		if (ret)
-			return ret;
-	}
+	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
+		i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
 
 	switch (*source) {
 	case INTEL_PIPE_CRC_SOURCE_PIPE:
@@ -200,11 +194,8 @@ static int i9xx_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
 				 enum intel_pipe_crc_source *source,
 				 u32 *val)
 {
-	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
-		int ret = i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
-		if (ret)
-			return ret;
-	}
+	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
+		i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
 
 	switch (*source) {
 	case INTEL_PIPE_CRC_SOURCE_PIPE:
-- 
2.34.1