From: Ingo Molnar 3c59x.c's vortex_timer() function knows that vp->lock can only be used by an irq context that it disabled - and can hence take the vp->lock without disabling hardirqs. Teach lockdep about this. Has no effect on non-lockdep kernels. Signed-off-by: Ingo Molnar Cc: Arjan van de Ven Signed-off-by: Andrew Morton --- drivers/net/3c59x.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN drivers/net/3c59x.c~lockdep-annotate-3c59xc-disable_irq drivers/net/3c59x.c --- a/drivers/net/3c59x.c~lockdep-annotate-3c59xc-disable_irq +++ a/drivers/net/3c59x.c @@ -1899,7 +1899,7 @@ vortex_timer(unsigned long data) printk(KERN_DEBUG "dev->watchdog_timeo=%d\n", dev->watchdog_timeo); } - disable_irq(dev->irq); + disable_irq_lockdep(dev->irq); old_window = ioread16(ioaddr + EL3_CMD) >> 13; EL3WINDOW(4); media_status = ioread16(ioaddr + Wn4_Media); @@ -1980,7 +1980,7 @@ leave_media_alone: dev->name, media_tbl[dev->if_port].name); EL3WINDOW(old_window); - enable_irq(dev->irq); + enable_irq_lockdep(dev->irq); mod_timer(&vp->timer, RUN_AT(next_tick)); if (vp->deferred) iowrite16(FakeIntr, ioaddr + EL3_CMD); _