lkml.org 
[lkml]   [2002]   [Aug]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: IDE-flash device and hard disk on same controller
Heater, Daniel (IndSys, GEFanuc, VMIC) wrote:
> The IDE driver, file ide-probe.c currently contains this test do prevent
> hard drives and IDE-flash devices (ex CompactFlash) from co-existing on the
> same IDE controller.
>
> /*
> * Prevent long system lockup probing later for non-existant
> * slave drive if the hwif is actually a flash memory card of some
> variety:
> */
> if (drive_is_flashcard(drive)) {
> ide_drive_t *mate =
> &HWIF(drive)->drives[1^drive->select.b.unit];
> if (!mate->ata_flash) {
> mate->present = 0;
> mate->noprobe = 1;
> }
> }
>
> This test's assumption that a spinning hard drive cannot coexist on the same
> controller as an IDE-flash device is incorrect. I have a working setup with
> such a configuration. I don't think that the IDE subsystem should punish
> everyone because _some_ hardware cannot tolerate this configuration.
>
> One solution may be to remove this test from the IDE subsystem and force
> users with buggy hardware to explicitly disable probing for a second
> device. I think the parameters hdx=none or hdx=noprobe should work for
> them.
>
> Comments??

Mentioned several times (and there is a workaround), see:
http://marc.theaimsgroup.com/?l=linux-kernel&m=100446144028502&w=2

I really think some of the default CF logic is bogus.

Pádraig.

-
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 13:28    [W:0.042 / U:1.164 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site