linux-kernel - [PATCH 02/12] net: ethernet: smsc: smc911x: Mark 'status' as __maybe

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20201104090610.1446616-3-lee.jones@linaro.org>
Date:   Wed,  4 Nov 2020 09:06:00 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Lee Jones <lee.jones@...aro.org>,
        Dustin McIntire <dustin@...soria.com>, netdev@...r.kernel.org
Subject: [PATCH 02/12] net: ethernet: smsc: smc911x: Mark 'status' as __maybe_unused

'status' is used to interact with a hardware register.  It might not
be safe to remove it entirely.  Mark it as __maybe_unused instead.

Fixes the following W=1 kernel build warning(s):

 drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_phy_configure’:
 drivers/net/ethernet/smsc/smc911x.c:882:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
 drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_phy_interrupt’:
 drivers/net/ethernet/smsc/smc911x.c:976:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
 drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_timeout’:
 drivers/net/ethernet/smsc/smc911x.c:1251:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]

Cc: "David S. Miller" <davem@...emloft.net>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Dustin McIntire <dustin@...soria.com>
Cc: netdev@...r.kernel.org
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/net/ethernet/smsc/smc911x.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/smsc/smc911x.c b/drivers/net/ethernet/smsc/smc911x.c
index 01069dfaf75c9..552953c376fe3 100644
--- a/drivers/net/ethernet/smsc/smc911x.c
+++ b/drivers/net/ethernet/smsc/smc911x.c
@@ -879,7 +879,7 @@ static void smc911x_phy_configure(struct work_struct *work)
 	int phyaddr = lp->mii.phy_id;
 	int my_phy_caps; /* My PHY capabilities */
 	int my_ad_caps; /* My Advertised capabilities */
-	int status;
+	int __maybe_unused status;
 	unsigned long flags;
 
 	DBG(SMC_DEBUG_FUNC, dev, "--> %s()\n", __func__);
@@ -973,7 +973,7 @@ static void smc911x_phy_interrupt(struct net_device *dev)
 {
 	struct smc911x_local *lp = netdev_priv(dev);
 	int phyaddr = lp->mii.phy_id;
-	int status;
+	int __maybe_unused status;
 
 	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
 
@@ -1248,7 +1248,7 @@ static void smc911x_poll_controller(struct net_device *dev)
 static void smc911x_timeout(struct net_device *dev, unsigned int txqueue)
 {
 	struct smc911x_local *lp = netdev_priv(dev);
-	int status, mask;
+	int __maybe_unused status, mask;
 	unsigned long flags;
 
 	DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
-- 
2.25.1