linux-kernel - [PATCH] mmc: sdhci-of-arasan: Remove uninitialized ret variables

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Date:   Thu, 16 Apr 2020 11:24:02 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Michal Simek <michal.simek@...inx.com>,
        Manish Narani <manish.narani@...inx.com>,
        linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        Nathan Chancellor <natechancellor@...il.com>,
        "kernelci . org bot" <bot@...nelci.org>
Subject: [PATCH] mmc: sdhci-of-arasan: Remove uninitialized ret variables

Clang warns:

drivers/mmc/host/sdhci-of-arasan.c:784:9: warning: variable 'ret' is
uninitialized when used here [-Wuninitialized]
        return ret;
               ^~~
drivers/mmc/host/sdhci-of-arasan.c:738:9: note: initialize the variable
'ret' to silence this warning
        int ret;
               ^
                = 0
drivers/mmc/host/sdhci-of-arasan.c:860:9: warning: variable 'ret' is
uninitialized when used here [-Wuninitialized]
        return ret;
               ^~~
drivers/mmc/host/sdhci-of-arasan.c:810:9: note: initialize the variable
'ret' to silence this warning
        int ret;
               ^
                = 0
2 warnings generated.

This looks like a copy paste error. Neither function has handling that
needs ret so just remove it and return 0 directly.

Fixes: f73e66a36772 ("sdhci: arasan: Add support for Versal Tap Delays")
Link: https://github.com/ClangBuiltLinux/linux/issues/996
Reported-by: kernelci.org bot <bot@...nelci.org>
Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
---
 drivers/mmc/host/sdhci-of-arasan.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 16e26c217a77..18bf0e76b1eb 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -735,7 +735,6 @@ static int sdhci_versal_sdcardclk_set_phase(struct clk_hw *hw, int degrees)
 		container_of(clk_data, struct sdhci_arasan_data, clk_data);
 	struct sdhci_host *host = sdhci_arasan->host;
 	u8 tap_delay, tap_max = 0;
-	int ret;
 
 	/*
 	 * This is applicable for SDHCI_SPEC_300 and above
@@ -781,7 +780,7 @@ static int sdhci_versal_sdcardclk_set_phase(struct clk_hw *hw, int degrees)
 		sdhci_writel(host, regval, SDHCI_ARASAN_OTAPDLY_REGISTER);
 	}
 
-	return ret;
+	return 0;
 }
 
 static const struct clk_ops versal_sdcardclk_ops = {
@@ -807,7 +806,6 @@ static int sdhci_versal_sampleclk_set_phase(struct clk_hw *hw, int degrees)
 		container_of(clk_data, struct sdhci_arasan_data, clk_data);
 	struct sdhci_host *host = sdhci_arasan->host;
 	u8 tap_delay, tap_max = 0;
-	int ret;
 
 	/*
 	 * This is applicable for SDHCI_SPEC_300 and above
@@ -857,7 +855,7 @@ static int sdhci_versal_sampleclk_set_phase(struct clk_hw *hw, int degrees)
 		sdhci_writel(host, regval, SDHCI_ARASAN_ITAPDLY_REGISTER);
 	}
 
-	return ret;
+	return 0;
 }
 
 static const struct clk_ops versal_sampleclk_ops = {

base-commit: a3ca59b9af21e68069555ffff1ad89bd2a7c40fc
-- 
2.26.1