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authorAnton Vorontsov <avorontsov@ru.mvista.com>2008-01-08 22:05:55 +0300
committerJeff Garzik <jeff@garzik.org>2008-01-12 17:45:33 -0500
commitdfd9a421bed2325059fae04f810769b648fa1302 (patch)
treeb9c5cc3fc2b967625a2272812d0983925f1d5781
parent9ea7d6cb9c223e8b0887b8b0355470acb947a1c9 (diff)
downloadlinux-stericsson-dfd9a421bed2325059fae04f810769b648fa1302.tar.gz
fs_enet: check for phydev existence in the ethtool handlers
Otherwise oops will happen if ethernet device has not been opened: Unable to handle kernel paging request for data at address 0x0000014c Faulting instruction address: 0xc016f7f0 Oops: Kernel access of bad area, sig: 11 [#1] MPC85xx NIP: c016f7f0 LR: c01722a0 CTR: 00000000 REGS: c79ddc70 TRAP: 0300 Not tainted (2.6.24-rc3-g820a386b) MSR: 00029000 <EE,ME> CR: 20004428 XER: 20000000 DEAR: 0000014c, ESR: 00000000 TASK = c789f5e0[999] 'snmpd' THREAD: c79dc000 GPR00: c01aceb8 c79ddd20 c789f5e0 00000000 c79ddd3c 00000000 c79ddd64 00000000 GPR08: 00000000 c7845b60 c79dde3c c01ace80 20004422 200249fc 000002a0 100da728 GPR16: 100c0000 00000000 00000000 00000000 20022078 00000009 200220e0 bfc85558 GPR24: c79ddd3c 00000000 00000000 c02e0e70 c022fc64 ffffffff c7845800 bfc85498 NIP [c016f7f0] phy_ethtool_gset+0x0/0x4c LR [c01722a0] fs_get_settings+0x18/0x28 Call Trace: [c79ddd20] [c79dde38] 0xc79dde38 (unreliable) [c79ddd30] [c01aceb8] dev_ethtool+0x294/0x11ec [c79dde30] [c01aaa44] dev_ioctl+0x454/0x6a8 [c79ddeb0] [c019b9d4] sock_ioctl+0x84/0x230 [c79dded0] [c007ded8] do_ioctl+0x34/0x8c [c79ddee0] [c007dfbc] vfs_ioctl+0x8c/0x41c [c79ddf10] [c007e38c] sys_ioctl+0x40/0x74 [c79ddf40] [c000d4c0] ret_from_syscall+0x0/0x3c Instruction dump: 81630000 800b0030 2f800000 419e0010 7c0803a6 4e800021 7c691b78 80010014 7d234b78 38210010 7c0803a6 4e800020 <8003014c> 7c6b1b78 38600000 90040004 Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Vitaly Bordug <vitb@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/fs_enet/fs_enet-main.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c
index 3e1a57a42f11..c83bd6560088 100644
--- a/drivers/net/fs_enet/fs_enet-main.c
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -894,14 +894,21 @@ static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs,
static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct fs_enet_private *fep = netdev_priv(dev);
+
+ if (!fep->phydev)
+ return -ENODEV;
+
return phy_ethtool_gset(fep->phydev, cmd);
}
static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct fs_enet_private *fep = netdev_priv(dev);
- phy_ethtool_sset(fep->phydev, cmd);
- return 0;
+
+ if (!fep->phydev)
+ return -ENODEV;
+
+ return phy_ethtool_sset(fep->phydev, cmd);
}
static int fs_nway_reset(struct net_device *dev)