linux-kernel - [PATCH -next 1/2] usb: ftdi-elan: remove a unnecessary variable 'empty

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Date:   Wed, 23 Jan 2019 22:16:56 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <gregkh@...uxfoundation.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH -next 1/2] usb: ftdi-elan: remove a unnecessary variable 'empty_packets'

The variable 'empty_packets' does not used in any other places
except for self increment, so it can be removed.

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/usb/misc/ftdi-elan.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index 76c718a..b2b05c9 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -915,7 +915,6 @@ static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi)
 	int bytes_read = 0;
 	int retry_on_empty = 1;
 	int retry_on_timeout = 3;
-	int empty_packets = 0;
 read:{
 		int packet_bytes = 0;
 		int retval = usb_bulk_msg(ftdi->udev,
@@ -963,7 +962,6 @@ read:{
 		} else if (packet_bytes == 2) {
 			unsigned char s0 = ftdi->bulk_in_buffer[0];
 			unsigned char s1 = ftdi->bulk_in_buffer[1];
-			empty_packets += 1;
 			if (s0 == 0x31 && s1 == 0x60) {
 				if (retry_on_empty-- > 0) {
 					goto more;
-- 
2.7.0