linux-kernel - Re: [PATCH 01/64] libata: fix CFA handling in ide_timing

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Date:	Mon, 18 Jan 2010 20:04:39 +0100
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
Cc:	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/64] libata: fix CFA handling in ide_timing_compute()

On Monday 18 January 2010 07:57:10 pm Sergei Shtylyov wrote:
> Bartlomiej Zolnierkiewicz wrote:
> 
> >>> From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> >>> Subject: [PATCH] libata: fix CFA handling in ide_timing_compute()
> >>>
> >>> Use standard cycle timing for CFA PIO5 and PIO6 modes.
> >>>
> >>> Based on commit 74638c8 for IDE subsystem.
> >>>
> >>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> >>> ---
> >>>  drivers/ata/libata-core.c |   17 +++++++++++------
> >>>  1 file changed, 11 insertions(+), 6 deletions(-)
> >>>
> >>> Index: b/drivers/ata/libata-core.c
> >>> ===================================================================
> >>> --- a/drivers/ata/libata-core.c
> >>> +++ b/drivers/ata/libata-core.c
> >>> @@ -3211,6 +3211,7 @@ const struct ata_timing *ata_timing_find
> >>>  int ata_timing_compute(struct ata_device *adev, unsigned short speed,
> >>>  		       struct ata_timing *t, int T, int UT)
> >>>  {
> >>> +	const u16 *id = adev->id;
> >>>  	const struct ata_timing *s;
> >>>  	struct ata_timing p;
> >>>  
> >>> @@ -3228,14 +3229,18 @@ int ata_timing_compute(struct ata_device
> >>>  	 * PIO/MW_DMA cycle timing.
> >>>  	 */
> >>>  
> >>> -	if (adev->id[ATA_ID_FIELD_VALID] & 2) {	/* EIDE drive */
> >>> +	if (id[ATA_ID_FIELD_VALID] & 2) {	/* EIDE drive */
> >>>  		memset(&p, 0, sizeof(p));
> >>> +
> >>>  		if (speed >= XFER_PIO_0 && speed <= XFER_SW_DMA_0) {
> >>>   
> >>>       
> >>    BTW, shouldn't this actually be 'speed < XFER_SW_DMA_0'?
> >>     
> >
> > Good catch, I'll fix the patch later (would you be willing to fix
> > ide-timings.c side of things?).
> >   
> 
>    I don't see what to fix there?..

Ah, sorry, ide-timings.c change is also not upstream yet..
--
Bartlomiej Zolnierkiewicz
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