Sep 17 2014

Staging: media: lirc: lirc_imon: Removed unnecessary variable to simplify return variable handling 

Author: Tina Johnson <tinajohnson.1234@gmail.com>

Variable rc was removed after merging its assignment statement with
immediately following return statement. Variable retval is not used
at all other that to return its initial value.Hence replaced retval
with its initial value in the return statement and removed the variable.

This patch was done using Coccinelle script and the following semantic
patch was used:

@rule1@
identifier ret;
expression e;
@@

-int ret = 0;
 ... when != ret
(
-ret = e;
+return e;
-return ret;
|
-return ret;
+return 0;
)

Signed-off-by: Tina Johnson 
Signed-off-by: Greg Kroah-Hartman 

---
 drivers/staging/media/lirc/lirc_imon.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
 
diff --git a/drivers/staging/media/lirc/lirc_imon.c b/drivers/staging/media/lirc/lirc_imon.c
index 96c76b3..06ec24c 100644
--- a/drivers/staging/media/lirc/lirc_imon.c
+++ b/drivers/staging/media/lirc/lirc_imon.c
@@ -489,7 +489,6 @@ static void usb_tx_callback(struct urb *urb)
  */
 static int ir_open(void *data)
 {
-	int retval = 0;
 	struct imon_context *context;
 
 	/* prevent races with disconnect */
@@ -506,7 +505,7 @@ static int ir_open(void *data)
 	dev_info(context->driver->dev, "IR port opened\n");
 
 	mutex_unlock(&driver_lock);
-	return retval;
+	return 0;
 }
 
 /**
@@ -1021,7 +1020,6 @@ static int imon_suspend(struct usb_interface *intf, pm_message_t message)
 
 static int imon_resume(struct usb_interface *intf)
 {
-	int rc = 0;
 	struct imon_context *context = usb_get_intfdata(intf);
 
 	usb_fill_int_urb(context->rx_urb, context->usbdev,
@@ -1031,9 +1029,7 @@ static int imon_resume(struct usb_interface *intf)
 		usb_rx_callback, context,
 		context->rx_endpoint->bInterval);
 
-	rc = usb_submit_urb(context->rx_urb, GFP_ATOMIC);
-
-	return rc;
+	return usb_submit_urb(context->rx_urb, GFP_ATOMIC);
 }
 
 module_usb_driver(imon_driver);

qlambert