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| author | Sebastian Siewior <bigeasy@linutronix.de> | 2008-08-19 21:12:45 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-08-27 05:55:19 -0400 |
| commit | ab9399059bb85a94758f42fb25607e440e926cc6 (patch) | |
| tree | e56738237e0f855cf5a19f234cec611782c7d2a4 /drivers/net/gianfar.h | |
| parent | edcfe5f7e307846e578fb88d69fa27051fded0ab (diff) | |
| download | linux-stable-ab9399059bb85a94758f42fb25607e440e926cc6.tar.gz linux-stable-ab9399059bb85a94758f42fb25607e440e926cc6.tar.bz2 linux-stable-ab9399059bb85a94758f42fb25607e440e926cc6.zip | |
net: don't grab a mutex within a timer context in gianfar
I got the following backtrace while network was unavailble:
|NETDEV WATCHDOG: eth0: transmit timed out
|BUG: sleeping function called from invalid context at /home/bigeasy/git/linux-2.6-powerpc/kernel/mutex.c:87
|in_atomic():1, irqs_disabled():0
|Call Trace:
|[c0383d90] [c0006dd8] show_stack+0x48/0x184 (unreliable)
|[c0383db0] [c001e938] __might_sleep+0xe0/0xf4
|[c0383dc0] [c025a43c] mutex_lock+0x24/0x3c
|[c0383de0] [c019005c] phy_stop+0x20/0x70
|[c0383df0] [c018d4ec] stop_gfar+0x28/0xf4
|[c0383e10] [c018e8c4] gfar_timeout+0x30/0x60
|[c0383e20] [c01fe7c0] dev_watchdog+0xa8/0x144
|[c0383e30] [c002f93c] run_timer_softirq+0x148/0x1c8
|[c0383e60] [c002b084] __do_softirq+0x5c/0xc4
|[c0383e80] [c00046fc] do_softirq+0x3c/0x54
|[c0383e90] [c002ac60] irq_exit+0x3c/0x5c
|[c0383ea0] [c000b378] timer_interrupt+0xe0/0xf8
|[c0383ec0] [c000e5ac] ret_from_except+0x0/0x18
|[c0383f80] [c000804c] cpu_idle+0xcc/0xdc
|[c0383fa0] [c025c07c] etext+0x7c/0x90
|[c0383fc0] [c0338960] start_kernel+0x294/0x2a8
|[c0383ff0] [c00003dc] skpinv+0x304/0x340
|------------[ cut here ]------------
The phylock was once a spinlock but got changed into a mutex via
commit 35b5f6b1a aka [PHYLIB: Locking fixes for PHY I/O potentially sleeping]
Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/gianfar.h')
| -rw-r--r-- | drivers/net/gianfar.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h index d59df98bd636..f46e9b63af13 100644 --- a/drivers/net/gianfar.h +++ b/drivers/net/gianfar.h @@ -756,6 +756,7 @@ struct gfar_private { uint32_t msg_enable; + struct work_struct reset_task; /* Network Statistics */ struct gfar_extra_stats extra_stats; }; |