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

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Date:   Sun, 9 Jul 2017 22:31:31 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Thomas Winischhofer <thomas@...ischhofer.net>,
        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: misc: sisusbvga: compress return logic into one line

Simplify return logic to avoid unnecessary variable declaration
and assignment.

These issues were 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/misc/sisusbvga/sisusb.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index 440d7fe..30774e0 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -610,13 +610,11 @@ static int sisusb_write_memio_byte(struct sisusb_usb_data *sisusb, int type,
 		u32 addr, u8 data)
 {
 	struct sisusb_packet packet;
-	int ret;
 
 	packet.header  = (1 << (addr & 3)) | (type << 6);
 	packet.address = addr & ~3;
 	packet.data    = data << ((addr & 3) << 3);
-	ret = sisusb_send_packet(sisusb, 10, &packet);
-	return ret;
+	return sisusb_send_packet(sisusb, 10, &packet);
 }
 
 static int sisusb_write_memio_word(struct sisusb_usb_data *sisusb, int type,
@@ -1333,13 +1331,11 @@ static int sisusb_write_pci_config(struct sisusb_usb_data *sisusb,
 		int regnum, u32 data)
 {
 	struct sisusb_packet packet;
-	int ret;
 
 	packet.header = 0x008f;
 	packet.address = regnum | 0x10000;
 	packet.data = data;
-	ret = sisusb_send_packet(sisusb, 10, &packet);
-	return ret;
+	return sisusb_send_packet(sisusb, 10, &packet);
 }
 
 static int sisusb_read_pci_config(struct sisusb_usb_data *sisusb,
@@ -2982,14 +2978,11 @@ static long sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 static long sisusb_compat_ioctl(struct file *f, unsigned int cmd,
 		unsigned long arg)
 {
-	long retval;
-
 	switch (cmd) {
 	case SISUSB_GET_CONFIG_SIZE:
 	case SISUSB_GET_CONFIG:
 	case SISUSB_COMMAND:
-		retval = sisusb_ioctl(f, cmd, arg);
-		return retval;
+		return sisusb_ioctl(f, cmd, arg);
 
 	default:
 		return -ENOIOCTLCMD;
-- 
2.5.0