Re: 2.6.20->2.6.21 - networking dies after random time

Ingo Molnar
2007-07-30T08:49:53Z

* Marcin Ślusarz <marcin.slusarz@gmail.com> wrote:

> > Subject: x86: activate HARDIRQS_SW_RESEND
> > From: Ingo Molnar <mingo@elte.hu>
> >
> > activate the software-triggered IRQ-resend logic.

> This patch didn't help (tested on 2.6.22.1) - ne2k_pci timed out.

ok. This makes it more likely that the driver itself (or the card) gets
confused by the resend.

does the patch below fix those timeouts? It tests the theory whether any
POST latency could expose this problem.

Ingo

Index: linux/drivers/net/lib8390.c
===================================================================
--- linux.orig/drivers/net/lib8390.c
+++ linux/drivers/net/lib8390.c
@@ -375,6 +375,8 @@ static int ei_start_xmit(struct sk_buff
/* Turn 8390 interrupts back on. */
ei_local->irqlock = 0;
ei_outb_p(ENISR_ALL, e8390_base + EN0_IMR);
+ /* force POST: */
+ ei_inb_p(e8390_base + EN0_IMR);

spin_unlock(&ei_local->page_lock);
enable_irq_lockdep_irqrestore(dev->irq, &flags);