linux-kernel - [PATCH] usb: isp1760: compress return logic into one line

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Date:   Sun, 9 Jul 2017 21:00:07 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] usb: isp1760: compress return logic into one line

Simplify return logic to avoid unnecessary variable assignment.

This issue was detected using Coccinelle and the following
semantic patch:

@@
local idexpression ret;
expression e;
@@

-ret =
+return
     e;
-return ret;

Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 drivers/usb/isp1760/isp1760-hcd.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index ac31d19..8e59e0c 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -396,7 +396,6 @@ static int handshake(struct usb_hcd *hcd, u32 reg,
 /* reset a non-running (STS_HALT == 1) controller */
 static int ehci_reset(struct usb_hcd *hcd)
 {
-	int retval;
 	struct isp1760_hcd *priv = hcd_to_priv(hcd);
 
 	u32 command = reg_read32(hcd->regs, HC_USBCMD);
@@ -405,9 +404,8 @@ static int ehci_reset(struct usb_hcd *hcd)
 	reg_write32(hcd->regs, HC_USBCMD, command);
 	hcd->state = HC_STATE_HALT;
 	priv->next_statechange = jiffies;
-	retval = handshake(hcd, HC_USBCMD,
-			    CMD_RESET, 0, 250 * 1000);
-	return retval;
+
+	return handshake(hcd, HC_USBCMD, CMD_RESET, 0, 250 * 1000);
 }
 
 static struct isp1760_qh *qh_alloc(gfp_t flags)
-- 
2.5.0