openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

bcm63xx_enet: avoid uninitialized variable warning 

gcc-7 and probably earlier versions get confused by this function
and print a harmless warning:

drivers/net/ethernet/broadcom/bcm63xx_enet.c: In function 'bcm_enet_open':
drivers/net/ethernet/broadcom/bcm63xx_enet.c:1130:3: error: 'phydev' may be used uninitialized in this function [-Werror=maybe-uninitialized]

This adds an initialization for the 'phydev' variable when it is unused
and changes the check to test for that NULL pointer to make it clear
that we always pass a valid pointer here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2017-01-18 15:52:53 +01:00 committed by David S. Miller
parent 0629a330cf
commit df384d435a
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/broadcom/bcm63xx_enet.c
View File

@ -913,6 +913,8 @@ static int bcm_enet_open(struct net_device *dev)
priv->old_link = 0;
priv->old_duplex = -1;
priv->old_pause = -1;
} else {
phydev = NULL;
}
/* mask all interrupts and request them */
@ -1083,7 +1085,7 @@ static int bcm_enet_open(struct net_device *dev)
enet_dmac_writel(priv, priv->dma_chan_int_mask,
ENETDMAC_IRMASK, priv->tx_chan);
if (priv->has_phy)
if (phydev)
phy_start(phydev);
else
bcm_enet_adjust_link(dev);
@ -1126,7 +1128,7 @@ static int bcm_enet_open(struct net_device *dev)
free_irq(dev->irq, dev);
out_phy_disconnect:
if (priv->has_phy)
if (phydev)
phy_disconnect(phydev);
return ret;