From: Evgeniy Polyakov
> Just a hack:
>
> --- drivers/net/e100.c.1 2006-01-20 13:39:19.000000000 +0300
> +++ drivers/net/e100.c 2006-01-20 14:15:40.000000000 +0300
> @@ -879,8 +879,8 @@
>
> writel((reg << 16) | (addr << 21) | dir | data,
> &nic->csr->mdi_ctrl);
>
> - for(i = 0; i < 100; i++) {
> - udelay(20);
> + for(i = 0; i < 1000; i++) {
> + udelay(2);
> if((data_out = readl(&nic->csr->mdi_ctrl)) & mdi_ready)
> break;
> }
My test environment and software is not precise enough for small
improvements, but I'd say this results in a 10-15 % improvement
(i.e. something like 50 us shorter delay) on the average.
To be sure, one would have to take and print tsc timestamps directly
in the watchdog code, but printk's mess up my timings.
--
Klaus Kusche (Software Development - Control Systems)
KEBA AG Gewerbepark Urfahr, A-4041 Linz, Austria (Europe)
Tel: +43 / 732 / 7090-3120 Fax: +43 / 732 / 7090-6301
E-Mail: [email protected] WWW: www.keba.com
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