lkml.org 
[lkml]   [2003]   [Mar]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: ide: indeed, using list_for_each_entry_safe removes endless looping / hang [Was: Re: 2.5.65-ac2 -- hda/ide trouble on ICH4]
	Hello, Alan!

On 24 Mar 2003 17:40:08 +0000
Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:

> On Mon, 2003-03-24 at 16:01, Alexander Atanasov wrote:
> > I don't understand, what's the difference and how the list is
> > lost?
> > ata_unused used to hold all drives that were not claimed by any
> > driver, now idedefault_driver claims all that drives, all drives go
> > in the .list
>
> ata_unused -> unattached device slots, new hotplug discoveries

Ok.

> idedefault_driver -> attached/known devices with no driver
> other list -> driven by that driver
>
> > The bug is there, and waiting to explode, keeping both lists would
> > mean to add one more list head in ide_drive_t, is that the fix
> > you want?
>
> I don't see where stuff is ending up on both lists yet. I've not had
> time to look hard at it though
>

It happens this way:
ide_register_driver -> ata_attach -> idedefault_driver.attach -> ide_register_subdriver -> list_add(&driver->list, &driver->drives) ->
return to ata_attach -> list_add_tail(&drive->list, &ata_unused);

--
have fun,
alex
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:34    [W:0.185 / U:0.152 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site