Bug 22460

	This problem was originally reported on freebsd-mobile.
	The email below describes the situation. The patch suggested
	does in fact fix the problem.

> From owner-freebsd-mobile  Mon Oct 30  4:27:55 2000
> Delivered-To: freebsd-mobile@freebsd.org
> Received: from lavender.sanpei.org (ppp153.dialup.st.keio.ac.jp [131.113.27.153])
> 	by hub.freebsd.org (Postfix) with ESMTP id F033E37B4C5
> 	for <freebsd-mobile@FreeBSD.ORG>; Mon, 30 Oct 2000 04:27:48 -0800 (PST)
> Received: (from sanpei@localhost)
> 	by lavender.sanpei.org (8.11.0/3.7W) id e9UCRIb08030;
> 	Mon, 30 Oct 2000 21:27:18 +0900 (JST)
> Date: Mon, 30 Oct 2000 21:27:18 +0900 (JST)
> Message-Id: <200010301227.e9UCRIb08030@lavender.sanpei.org>
> To: archie@dellroad.org
> Cc: freebsd-mobile@FreeBSD.ORG
> Subject: Re: PCMCIA card temporarily freezes system
> In-Reply-To: Your message of "Sat, 28 Oct 2000 11:52:10 -0700 (PDT)".
> 	<200010281852.e9SIqAO34152@curve.dellroad.org>
> From: sanpei@sanpei.org (MIHIRA Yoshiro)
> X-Mailer: mnews [version 1.22] 1999-12/19(Sun)
> Sender: owner-freebsd-mobile@FreeBSD.ORG
> Precedence: bulk
> X-Loop: FreeBSD.org
> 
> archie@dellroad.org wrote:
> 
> >> I have this PCMCIA card: PMX PE-200, which uses the "ed" driver.
> >> It has worked for me before on another system, but in trying
> >> on a ThinkPad A20m laptop with FreeBSD 4.1.1-REL, it seems
> >> to temporarily "freeze" the system when plugged in.
> >> 
> >> That is, if pccardd is not running, everything looks normal.
> >> When pccardd is started, it detects the card and the kernel
> >> spits out the probe message with the IRQ and memory address,
> >> and then the system completely freezes:
> >> 
> >>   pccard: card inserted, slot 0
> >>   ed0 at port 0x300-0x31f iomem 0xd4000-0xd43ff irq 10 slot 0 on pccard0
> >> 
> >> Pressing keys on the keyboard does nothing. But then if I pop out
> >> the card, the system continues normally (responding to any keys
> >> pressed while frozen), printing out the card's Ethernet address,
> >> etc. Of course then pccard immediately detects the card has been
> >> popped out and detaches the interface:
> >> 
> >>   ed0: address 00:20:e0:0f:a6:9f, type NE2000 (16 bit)
> >>   ed0: detached
> >>   pccard: card removed, slot 0
> >>   stray irq 10
> >> 
> >> This can be repeeated any number of times.
> >> 
> >> Any ideas? I've tried different interrupts, etc., to no avail.
> >> This card works fine under Win98 on the same laptop. Dmesg
> >> excerpts below..
> 
> Try below quick hack patch. 
> Some PC-Card which uses "ed" driver have hung-up with ed_get_linksys.
> But we don't solve this problem....
> 
> Cheers
> MIHIRA Yoshiro
> 
> --- sys/dev/ed/if_ed_pccard.c.org	Mon Oct 30 21:24:34 2000
> +++ sys/dev/ed/if_ed_pccard.c	Mon Oct 30 21:24:48 2000
> @@ -201,13 +201,17 @@
>  		return (error);
>  	}	      
>  
> +#if 0
>  	if (ed_get_Linksys(sc) == 0) {
> +#endif
>  		pccard_get_ether(dev, ether_addr);
>  		for (i = 0, sum = 0; i < ETHER_ADDR_LEN; i++)
>  			sum |= ether_addr[i];
>  		if (sum)
>  			bcopy(ether_addr, sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
> +#if 0
>  	}
> +#endif
>  
>  	error = ed_attach(sc, device_get_unit(dev), flags);
>  	return (error);

Fix: 

Apply the patch shown above.
How-To-Repeat: 
	See above.