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SubjectRe: Still having problems with eepro100
Andrey Savochkin wrote:
>
> On Tue, Oct 30, 2001 at 12:39:27PM +0100, Johan wrote:
> >
> > Hello,
> > Does anyone except me still having problems with the eepro100 drivers ?
> >
> > The network connection stalls and I'll get this message:
> >
> > eepro100: wait_for_cmd_done timeout!
>
> Try to add `udelay(1);' inside the loop in wait_for_cmd_done().
> It helped to some people with same problems.

In 2.4 that's already there:

> static inline void wait_for_cmd_done(long cmd_ioaddr)
> {
> int wait = 1000;
> do udelay(1) ;
> while(inb(cmd_ioaddr) && --wait >= 0);
> #ifndef final_version
> if (wait < 0)
> printk(KERN_ALERT "eepro100: wait_for_cmd_done timeout!\n");
> #endif
> }

In contrast, here is what Becker's current version looks like. It looks
like Becker just added a hack to continue waiting.

Things to try:
(a) add a rmb() after the udelay
(b) the Becker version


> /* How to wait for the command unit to accept a command.
> Typically this takes 0 ticks. */
>
> static inline void wait_for_cmd_done(long cmd_ioaddr)
> {
> int wait = 0;
> do
> if (inb(cmd_ioaddr) == 0) return;
> while(++wait <= 100);
> do
> if (inb(cmd_ioaddr) == 0) break;
> while(++wait <= 10000);
> printk(KERN_ERR "Command %4.4x was not immediately accepted, %d ticks!\n
> ",
> inb(cmd_ioaddr), wait);
> }


--
Jeff Garzik | Only so many songs can be sung
Building 1024 | with two lips, two lungs, and one tongue.
MandrakeSoft | - nomeansno
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