linux-kernel - [PATCH] usb: class: remove logically dead code

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Message-ID: <20170215031052.GA5519@embeddedgus>
Date:   Tue, 14 Feb 2017 21:10:52 -0600
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     gregkh@...uxfoundation.org, oneukum@...e.com, bjorn@...k.no,
        robert.foss@...labora.com
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>,
        Peter Senna Tschudin <peter.senna@...il.com>
Subject: [PATCH] usb: class: remove logically dead code

Remove logically dead code.
'cntr' is always equal to zero when the following line of code is executed:
rv = cntr ? cntr : -EAGAIN;

Addresses-Coverity-ID: 113227
Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 drivers/usb/class/cdc-wdm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 0a63695..8fda45a 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -531,7 +531,7 @@ static ssize_t wdm_read
 		i++;
 		if (file->f_flags & O_NONBLOCK) {
 			if (!test_bit(WDM_READ, &desc->flags)) {
-				rv = cntr ? cntr : -EAGAIN;
+				rv = -EAGAIN;
 				goto err;
 			}
 			rv = 0;
-- 
2.5.0