linux-kernel - [PATCH] net/usb/drivers: Remove useless hrtimer

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Message-Id: <1529417671-21384-1-git-send-email-daniel.lezcano@linaro.org>
Date:   Tue, 19 Jun 2018 16:14:30 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     oliver@...kum.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        linux-usb@...r.kernel.org (open list:USB CDC ETHERNET DRIVER),
        netdev@...r.kernel.org (open list:NETWORKING DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] net/usb/drivers: Remove useless hrtimer_active check

The code does:

 if (hrtimer_active(&t))
    hrtimer_cancel(&t);

However, hrtimer_cancel() checks if the timer is active, so the
test above is pointless.

Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/net/usb/cdc_ncm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 90d07ed..732ceff 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -967,8 +967,7 @@ void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf)
 
 	atomic_set(&ctx->stop, 1);
 
-	if (hrtimer_active(&ctx->tx_timer))
-		hrtimer_cancel(&ctx->tx_timer);
+	hrtimer_cancel(&ctx->tx_timer);
 
 	tasklet_kill(&ctx->bh);
 
-- 
2.7.4