linux-kernel - [PATCH 3.2 117/147] isdn: hfcpci_softirq: get func return to suppress compiler warning

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Message-ID: <lsq.1510009387.778577463@decadent.org.uk>
Date:   Mon, 06 Nov 2017 23:03:07 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "David S. Miller" <davem@...emloft.net>,
        "Antonio Alecrim Jr" <antonio.alecrim@...il.com>
Subject: [PATCH 3.2 117/147] isdn: hfcpci_softirq: get func return to
 suppress compiler warning

3.2.95-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Antonio Alecrim Jr <antonio.alecrim@...il.com>

commit d6d6d1bc44362112e10a48d434e5b3c716152003 upstream.

Signed-off-by: Antonio Alecrim Jr <antonio.alecrim@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/isdn/hardware/mISDN/hfcpci.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -2316,8 +2316,8 @@ _hfcpci_softirq(struct device *dev, void
 static void
 hfcpci_softirq(void *arg)
 {
-	(void) driver_for_each_device(&hfc_driver.driver, NULL, arg,
-					_hfcpci_softirq);
+	WARN_ON_ONCE(driver_for_each_device(&hfc_driver.driver, NULL, arg,
+				      _hfcpci_softirq) != 0);
 
 	/* if next event would be in the past ... */
 	if ((s32)(hfc_jiffies + tics - jiffies) <= 0)