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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@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
YueHaibing 2019-01-23 22:16:56 +08:00 committed by Greg Kroah-Hartman
parent e36f8b7b7d
commit 04389af74d
1 changed files with 0 additions and 2 deletions
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2
drivers/usb/misc/ftdi-elan.c
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@ -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;