diff options
| author | Frank Li <Frank.Li@freescale.com> | 2013-02-06 14:59:58 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-07 23:36:41 -0500 |
| commit | 365cc174648cd7e9b11e522c3d5b07ccf3c60d99 (patch) | |
| tree | 497cbb698c6da8b4175b56fe84ecfb14852e5fee | |
| parent | 41b749201bbe54ce807c4287b4942e85cb0ca466 (diff) | |
net: fec: correct fix method about miss init spinlock
Old method will cause init spinlock twice.
New method will avoid init spinlock twice and fix miss init spinlock
at fec_restart.
BUG: spinlock bad magic on CPU#1, swapper/0/1
lock: 0xbfae0f8c, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
Backtrace:
[<80011d54>] (dump_backtrace+0x0/0x10c) from [<804e7800>] (dump_stack+0x18/0x1c)
r6:bfae0000 r5:bfae0f8c r4:00000000 r3:806c1310
[<804e77e8>] (dump_stack+0x0/0x1c) from [<804e9f20>] (spin_dump+0x80/0x94)
[<804e9ea0>] (spin_dump+0x0/0x94) from [<804e9f60>] (spin_bug+0x2c/0x30)
r5:805f6f8c r4:bfae0f8c
[<804e9f34>] (spin_bug+0x0/0x30) from [<80257984>] (do_raw_spin_lock+0x170/0x1b0 )
r5:806b4950 r4:bfae0f8c
[<80257814>] (do_raw_spin_lock+0x0/0x1b0) from [<804ed15c>] (_raw_spin_lock_irqs ave+0x18/0x20)
[<804ed144>] (_raw_spin_lock_irqsave+0x0/0x20) from [<8033c694>] (fec_ptp_start_ cyclecounter+0x3c/0x120)
r4:bfae0f8c r3:00000002
[<8033c658>] (fec_ptp_start_cyclecounter+0x0/0x120) from [<80339e08>] (fec_resta rt+0x56c/0x5f8)
r8:00000000 r7:806e6f48 r6:00000112 r5:806b4950 r4:bfae0000
[<8033989c>] (fec_restart+0x0/0x5f8) from [<8033b9e4>] (fec_probe+0x508/0xa48)
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/freescale/fec.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index 51215e1507dd..0fe68c46267e 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -1609,7 +1609,6 @@ static int fec_enet_init(struct net_device *ndev) } spin_lock_init(&fep->hw_lock); - spin_lock_init(&fep->tmreg_lock); fep->netdev = ndev; @@ -1841,6 +1840,9 @@ fec_probe(struct platform_device *pdev) fec_reset_phy(pdev); + if (fep->bufdesc_ex) + fec_ptp_init(ndev, pdev); + ret = fec_enet_init(ndev); if (ret) goto failed_init; @@ -1856,9 +1858,6 @@ fec_probe(struct platform_device *pdev) if (ret) goto failed_register; - if (fep->bufdesc_ex) - fec_ptp_init(ndev, pdev); - return 0; failed_register: |