Re: netif_schedule and mpc5200_fec

On 7/22/08, Jon Smirl [off-list ref] wrote:

I just updated to linus/master and mpc5200_fec won't boot.

It does boot, but this badness looks like it is coming from this
patch. I don't know enough about networking to debug it.

jonsmirl@terra:~/fs/drivers/net$ git diff
8b9835108f68938a5f7e74fd2c0fc65da2abad92 fec_mpc52xx.c

diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c
index 329edd9..ae9ecb7 100644
--- a/drivers/net/fec_mpc52xx.c
+++ b/drivers/net/fec_mpc52xx.c

@@ -197,7 +197,7 @@ static void mpc52xx_fec_adjust_link(struct net_device *dev)
                if (priv->link == PHY_DOWN) {
                        new_state = 1;
                        priv->link = phydev->link;
-                       netif_schedule(dev);
+                       netif_tx_schedule_all(dev);
                        netif_carrier_on(dev);
                        netif_start_queue(dev);
                }

jonsmirl@terra:~/fs/drivers/net$

 Guessing it is this patch but I haven't looked at it yet.

 commit 263ba3204a434d0ca851e1321b31cd58376b86cb
 Author: David S. Miller [off-list ref]
 Date:   Tue Jul 15 03:47:41 2008 -0700

    netdev: Convert all drivers away from netif_schedule().

    They logically all want to trigger a schedule for all device
    TX queues.

    Signed-off-by: David S. Miller [off-list ref]


 Sending DHCP requests .<0>------------[ cut here ]------------
 Badness at c01da570 [verbose debug info unavailable]
 NIP: c01da570 LR: c015b31c CTR: c015b234
 REGS: c382de70 TRAP: 0700   Not tainted  (2.6.26-efika)
 MSR: 00029032 <EE,ME,IR,DR>  CR: 22000082  XER: 00000000
 TASK = c3815000[4] 'events/0' THREAD: c382c000
 GPR00: 00000001 c382df20 c3815000 c031e468 c38f25a0 00000000 00000000 00000000
 GPR08: c382dfb4 c0330000 00000000 c031e468 3181b461 ffffffff 03ffe000 ffffffff
 GPR16: 00000001 00000000 007ffc00 00000000 00000000 03ff8838 00000000 00000004
 GPR24: 00000000 00000000 c032b46c c0330000 c38a2e00 00000001 c38f2780 c38f2400
 NIP [c01da570] __netif_schedule+0x3c/0xac
 LR [c015b31c] mpc52xx_fec_adjust_link+0xe8/0x194
 Call Trace:
 [c382df20] [c002eeb0] queue_work+0x58/0x6c (unreliable)
 [c382df40] [c015b31c] mpc52xx_fec_adjust_link+0xe8/0x194
 [c382df60] [c0158cd0] phy_state_machine+0xec/0x4e0
 [c382df80] [c002eb0c] run_workqueue+0xb4/0x148
 [c382dfa0] [c002f070] worker_thread+0x9c/0xb8
 [c382dfd0] [c0032954] kthread+0x4c/0x88
 [c382dff0] [c000f538] kernel_thread+0x44/0x60
 Instruction dump:
 7c6b1b78 3929e468 7f834800 39200002 90010024 38030024 bfa10014 40be0030
 3d20c033 80099988 7c000034 5400d97e <0f000000> 2f800000 41be0054 38000001
 PHY: f0003000:00 - Link is Up - 100/Full
 ., OK



 --
 Jon Smirl
 jonsmirl@gmail.com

-- 
Jon Smirl
jonsmirl@gmail.com