linux-kernel - [PATCH] can: mcp251xfd: remove useless code in mcp251xfd_chip

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Message-Id: <1605605352-25298-1-git-send-email-kaixuxia@tencent.com>
Date:   Tue, 17 Nov 2020 17:29:12 +0800
From:   xiakaixu1987@...il.com
To:     mkl@...gutronix.de, manivannan.sadhasivam@...aro.org,
        thomas.kopp@...rochip.com, wg@...ndegger.com, kuba@...nel.org
Cc:     linux-can@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Kaixu Xia <kaixuxia@...cent.com>
Subject: [PATCH] can: mcp251xfd: remove useless code in mcp251xfd_chip_softreset

From: Kaixu Xia <kaixuxia@...cent.com>

It would directly return if the variable err equals to 0 or other errors.
Only when the err equals to -ETIMEDOUT it can reach the 'if (err)'
statement, so the 'if (err)' and last 'return -ETIMEDOUT' statements are
useless. Romove them.

Reported-by: Tosk Robot <tencent_os_robot@...cent.com>
Signed-off-by: Kaixu Xia <kaixuxia@...cent.com>
---
 drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
index 9c215f7c5f81..ceae18270c01 100644
--- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
+++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
@@ -644,10 +644,7 @@ static int mcp251xfd_chip_softreset(const struct mcp251xfd_priv *priv)
 		return 0;
 	}
 
-	if (err)
-		return err;
-
-	return -ETIMEDOUT;
+	return err;
 }
 
 static int mcp251xfd_chip_clock_init(const struct mcp251xfd_priv *priv)
-- 
2.20.0