From: Tejun Heo <htejun@gmail.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: jeff@garzik.org, linux-ide@vger.kernel.org
Subject: Re: [PATCH 08/12] libata: implement ata_timing_cycle2mode() and use it in libata-acpi and pata_acpi
Date: Tue, 06 Nov 2007 20:09:06 +0900 [thread overview]
Message-ID: <47304B52.3010807@gmail.com> (raw)
In-Reply-To: <20071106105912.1526c770@the-village.bc.nu>
Alan Cox wrote:
>> + /* PIO */
>> + mode = ata_timing_cycle2mode(ATA_SHIFT_PIO, gtm->drive[unit].pio);
>> + xfer_mask |= ata_xfer_mode2mask(mode);
>
> No check v 0xFF
>
>> + * ata_timing_cycle2mode - find xfer mode for the specified cycle duration
>> + * @xfer_shift: ATA_SHIFT_* value for transfer type to examine.
>> + * @cycle: cycle duration in ns
>> + *
>> + * Return matching xfer mode for @cycle. The returned mode is of
>> + * the transfer type specified by @xfer_shift. If @cycle is too
>> + * slow for @xfer_shift, 0xff is returned. If @cycle is faster
>> + * than the fastest known mode, the fasted m
>
> Can return 0xFF
The check is implicit in ata_xfer_mode2mask(), 0xff translates to
xfermask 0, vice-versa. 0xff is internally a valid value indicating no
mode.
Thanks.
--
tejun
next prev parent reply other threads:[~2007-11-06 11:09 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-06 5:38 [PATCHSET] libata: update timing and fix pata_amd transfer mode selection Tejun Heo
2007-11-06 5:38 ` [PATCH 01/12] ata_generic: unindent loop in generic_set_mode() Tejun Heo
2007-11-06 5:39 ` [PATCH 02/12] libata: export xfermode / PATA timing related functions Tejun Heo
2007-11-06 5:39 ` [PATCH 03/12] libata: clean up xfermode / PATA timing related stuff Tejun Heo
2007-11-06 5:39 ` [PATCH 04/12] libata: kill ata_id_to_dma_mode() Tejun Heo
2007-11-06 10:49 ` Alan Cox
2007-11-06 11:21 ` Tejun Heo
2007-11-24 1:13 ` Jeff Garzik
2007-11-06 5:39 ` [PATCH 05/12] libata: xfer_mask is unsigned int not unsigned long Tejun Heo
2007-11-06 10:51 ` Alan Cox
2007-11-06 10:59 ` Tejun Heo
2007-11-06 17:53 ` Jeff Garzik
2007-11-07 1:12 ` Tejun Heo
2007-11-24 1:13 ` Jeff Garzik
2007-11-24 1:13 ` Jeff Garzik
2007-11-27 8:42 ` Tejun Heo
2007-11-06 5:39 ` [PATCH 06/12] libata: separate out ata_acpi_gtm_xfermask() from pacpi_discover_modes() Tejun Heo
2007-11-06 10:54 ` Alan Cox
2007-11-06 11:00 ` Tejun Heo
2007-11-24 1:14 ` Jeff Garzik
2007-11-06 5:39 ` [PATCH 07/12] libata: fix ata_acpi_gtm_xfermask() Tejun Heo
2007-11-06 10:55 ` Alan Cox
2007-11-24 1:16 ` Jeff Garzik
2007-11-27 8:40 ` Tejun Heo
2007-11-06 5:39 ` [PATCH 08/12] libata: implement ata_timing_cycle2mode() and use it in libata-acpi and pata_acpi Tejun Heo
2007-11-06 10:59 ` Alan Cox
2007-11-06 11:09 ` Tejun Heo [this message]
2007-11-24 1:17 ` Jeff Garzik
2007-11-06 5:39 ` [PATCH 09/12] libata: implement ata_acpi_init_gtm() Tejun Heo
2007-11-06 5:39 ` [PATCH 10/12] libata: reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask() Tejun Heo
2007-11-06 5:39 ` [PATCH 11/12] libata: add ATA_CBL_PATA_IGN Tejun Heo
2007-11-06 10:59 ` Alan Cox
2007-11-06 11:02 ` Tejun Heo
2007-11-06 11:25 ` Alan Cox
2007-11-06 5:39 ` [PATCH 12/12] pata_amd: update mode selection for NV PATAs Tejun Heo
2007-11-06 10:59 ` Alan Cox
2007-11-23 1:08 ` [PATCHSET] libata: update timing and fix pata_amd transfer mode selection Tejun Heo
2007-11-24 1:18 ` Jeff Garzik
-- strict thread matches above, loose matches on Subject: below --
2007-11-27 10:43 [PATCHSET] libata: improve timing code and fix pata_amd transfer mode selection, take #2 Tejun Heo
2007-11-27 10:43 ` [PATCH 08/12] libata: implement ata_timing_cycle2mode() and use it in libata-acpi and pata_acpi Tejun Heo
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