[PATCH v3 1/6] mmc: zynq_sdhci: Resolve uninitialized return value

[Ashok Reddy Soma]

set_phase() functions are not modifying the ret value and returning
the same uninitialized ret, return 0 instead.

Keep the return type as int to return errors when the tapdelay's are
set via xilinx_pm_request() in future.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma at xilinx.com>
---

Changes in v3:
 - Updated commmit description to explain why return type int is kept
 - Change "@degree" to "@degrees:" in 5/6, so revert it in 1/6 from
   sdhci_zynqmp_sampleclk_set_phase() and sdhci_versal_sdcardclk_set_phase()

Changes in v2:
 - Changed "@degree" to "@degrees:" in function descriptions of tap
   delay functions

 drivers/mmc/zynq_sdhci.c | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index b79c4021b6..5bad5cb9e7 100644
--- a/drivers/mmc/zynq_sdhci.c
+++ b/drivers/mmc/zynq_sdhci.c
@@ -183,7 +183,7 @@ static int arasan_sdhci_execute_tuning(struct mmc *mmc, u8 opcode)
  *
  * @host:		Pointer to the sdhci_host structure.
  * @degrees:		The clock phase shift between 0 - 359.
- * Return: 0 on success and error value on error
+ * Return: 0
  */
 static int sdhci_zynqmp_sdcardclk_set_phase(struct sdhci_host *host,
 					    int degrees)
@@ -191,7 +191,6 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct sdhci_host *host,
 	struct arasan_sdhci_priv *priv = dev_get_priv(host->mmc->dev);
 	struct mmc *mmc = (struct mmc *)host->mmc;
 	u8 tap_delay, tap_max = 0;
-	int ret;
 	int timing = mode2timing[mmc->selected_mode];
 
 	/*
@@ -229,7 +228,7 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct sdhci_host *host,
 
 	arasan_zynqmp_set_tapdelay(priv->deviceid, 0, tap_delay);
 
-	return ret;
+	return 0;
 }
 
 /**
@@ -239,7 +238,7 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct sdhci_host *host,
  *
  * @host:		Pointer to the sdhci_host structure.
  * @degrees:		The clock phase shift between 0 - 359.
- * Return: 0 on success and error value on error
+ * Return: 0
  */
 static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host,
 					    int degrees)
@@ -247,7 +246,6 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host,
 	struct arasan_sdhci_priv *priv = dev_get_priv(host->mmc->dev);
 	struct mmc *mmc = (struct mmc *)host->mmc;
 	u8 tap_delay, tap_max = 0;
-	int ret;
 	int timing = mode2timing[mmc->selected_mode];
 
 	/*
@@ -285,7 +283,7 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host,
 
 	arasan_zynqmp_set_tapdelay(priv->deviceid, tap_delay, 0);
 
-	return ret;
+	return 0;
 }
 
 /**
@@ -295,14 +293,13 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host,
  *
  * @host:		Pointer to the sdhci_host structure.
  * @degrees		The clock phase shift between 0 - 359.
- * Return: 0 on success and error value on error
+ * Return: 0
  */
 static int sdhci_versal_sdcardclk_set_phase(struct sdhci_host *host,
 					    int degrees)
 {
 	struct mmc *mmc = (struct mmc *)host->mmc;
 	u8 tap_delay, tap_max = 0;
-	int ret;
 	int timing = mode2timing[mmc->selected_mode];
 
 	/*
@@ -349,7 +346,7 @@ static int sdhci_versal_sdcardclk_set_phase(struct sdhci_host *host,
 		sdhci_writel(host, regval, SDHCI_ARASAN_OTAPDLY_REGISTER);
 	}
 
-	return ret;
+	return 0;
 }
 
 /**
@@ -359,14 +356,13 @@ static int sdhci_versal_sdcardclk_set_phase(struct sdhci_host *host,
  *
  * @host:		Pointer to the sdhci_host structure.
  * @degrees		The clock phase shift between 0 - 359.
- * Return: 0 on success and error value on error
+ * Return: 0
  */
 static int sdhci_versal_sampleclk_set_phase(struct sdhci_host *host,
 					    int degrees)
 {
 	struct mmc *mmc = (struct mmc *)host->mmc;
 	u8 tap_delay, tap_max = 0;
-	int ret;
 	int timing = mode2timing[mmc->selected_mode];
 
 	/*
@@ -417,7 +413,7 @@ static int sdhci_versal_sampleclk_set_phase(struct sdhci_host *host,
 		sdhci_writel(host, regval, SDHCI_ARASAN_ITAPDLY_REGISTER);
 	}
 
-	return ret;
+	return 0;
 }
 
 static void arasan_sdhci_set_tapdelay(struct sdhci_host *host)
-- 
2.17.1