[PATCH 30/30] net: ethernet: smsc: smc91x: Mark 'pkt_len' as __maybe_unused

[Lee Jones <lee.jones@linaro.org>]

'pkt_len' 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/smc91x.c: In function ‘smc_tx’:
 drivers/net/ethernet/smsc/smc91x.c:706:51: warning: variable ‘pkt_len’ set but not used [-Wunused-but-set-variable]

Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Erik Stahlman <erik@vt.edu>
Cc: Peter Cammaert <pc@denkart.be>
Cc: Daris A Nevil <dnevil@snmc.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/net/ethernet/smsc/smc91x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c
index b5d053292e717..a3f37b1f86491 100644
--- a/drivers/net/ethernet/smsc/smc91x.c
+++ b/drivers/net/ethernet/smsc/smc91x.c
@@ -703,7 +703,7 @@ static void smc_tx(struct net_device *dev)
 {
 	struct smc_local *lp = netdev_priv(dev);
 	void __iomem *ioaddr = lp->base;
-	unsigned int saved_packet, packet_no, tx_status, pkt_len;
+	unsigned int saved_packet, packet_no, tx_status, __maybe_unused pkt_len;
 
 	DBG(3, dev, "%s\n", __func__);
 
-- 
2.25.1