linux-kernel - Re: [PATCH] drivers/ide/ide-probe.c Skip ide_wait_not_busy on noprobe-disks. was: [PATCH][RESUBMIT] drivers/ide/ide-probe.c, kernel 2.6.23.1

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Date:	Sun, 18 Nov 2007 22:39:33 +0100
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Jonas Stare <jonas.stare@...plescout.se>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linux-ide@...r.kernel.org
Subject: Re: [PATCH] drivers/ide/ide-probe.c Skip ide_wait_not_busy on noprobe-disks. was: [PATCH][RESUBMIT] drivers/ide/ide-probe.c, kernel 2.6.23.1

On Friday 16 November 2007, Jonas Stare wrote:
> There is a problem in some hardware where the kernel will stall for
> 35 seconds waiting for disks that dont exist. This patch will skip
> waiting for the BSY-bit on ide-drives to go away if you set
> hdx=noprobe as a kernel option and the disk is not marked
> as 'present' (like when you set the geometry by hand).
> 
> If no noprobe-option is set the code will work (more or less) as the 
> original but if set the code will skip the ide_wait_not_busy() for that 
> drive. Even if there would be a drive there and it is still BSY 
> afterwards it should not matter since it isn't probed for later.
> 
> (The code also honors the MAX_DRIVES variable instead of assuming that 
> there will be two harddrives on the bus.)
> 
> 
> Signed-off-by: Jonas Stare <jonas.stare@...plescout.se>

Thanks!

PS There were still some whitespace problems (all tabs were replaced by
spaces) so I just applied it by hand (and made few minor cleanups while
at it).

Bart
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