From: Jeff Garzik <jeff@garzik.org>
To: Tejun Heo <htejun@gmail.com>
Cc: linux-ide@vger.kernel.org, liml@rtr.ca, alan@lxorguk.ukuu.org.uk,
James.Bottomley@HansenPartnership.com, brking@us.ibm.com,
ashish.kalra@freescale.com, leoli@freescale.com
Subject: Re: [PATCH 19/27] libata: unify mechanism to request follow-up SRST
Date: Fri, 04 Apr 2008 03:00:01 -0400 [thread overview]
Message-ID: <47F5D1F1.8090101@garzik.org> (raw)
In-Reply-To: <1206451028739-git-send-email-htejun@gmail.com>
Tejun Heo wrote:
> Previously, there were two ways to trigger follow-up SRST from
> hardreset method - returning -EAGAIN and leaving all device classes
> unmodified. Drivers never used the latter mechanism and the only use
> case for the former was when hardreset couldn't classify.
>
> Drop the latter mechanism and let -EAGAIN mean "perform follow-up SRST
> if classification is required". This change removes unnecessary
> follow-up SRSTs and simplifies reset implementations.
>
> Signed-off-by: Tejun Heo <htejun@gmail.com>
> ---
> drivers/ata/ahci.c | 3 ---
> drivers/ata/libata-core.c | 1 -
> drivers/ata/libata-eh.c | 26 ++++++++------------------
> drivers/ata/libata-sff.c | 1 -
> 4 files changed, 8 insertions(+), 23 deletions(-)
related long term to-do item: support hard and soft resets delivered
via SG_IO according to the SAT standard
next prev parent reply other threads:[~2008-04-04 7:00 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-25 13:16 [PATCHSET #upstream] libata: modularize SFF support, take #1 Tejun Heo
2008-03-25 13:16 ` [PATCH 01/27] libata: drop ata_dev_select() from ata_dev_read_id Tejun Heo
2008-03-25 13:16 ` [PATCH 02/27] libata: reorder functions in libata-sff.c Tejun Heo
2008-03-25 13:16 ` [PATCH 03/27] libata: reorganize SFF related stuff Tejun Heo
2008-03-25 13:16 ` [PATCH 04/27] libata: move ata_pci_default_filter() out of CONFIG_PCI Tejun Heo
2008-03-25 13:16 ` [PATCH 05/27] libata: kill ata_chk_status() call from ata_dev_configure() Tejun Heo
2008-03-25 13:16 ` [PATCH 06/27] libata: kill ata_chk_status() Tejun Heo
2008-04-04 7:29 ` Jeff Garzik
2008-03-25 13:16 ` [PATCH 07/27] libata: rename SFF functions Tejun Heo
2008-03-25 13:16 ` [PATCH 08/27] libata: rename SFF port ops Tejun Heo
2008-03-25 13:16 ` [PATCH 09/27] libata: clean up port_ops->sff_irq_clear() Tejun Heo
2008-03-25 13:16 ` [PATCH 10/27] libata: separate out ata_std_prereset() from ata_sff_prereset() Tejun Heo
2008-03-25 13:16 ` [PATCH 11/27] libata: separate out ata_std_postreset() from ata_sff_postreset() Tejun Heo
2008-03-25 13:16 ` [PATCH 12/27] libata: restructure SFF post-reset readiness waits Tejun Heo
2008-04-04 6:58 ` Jeff Garzik
2008-03-25 13:16 ` [PATCH 13/27] libata: separate out ata_wait_ready() and implement ata_wait_after_reset() Tejun Heo
2008-03-25 13:16 ` [PATCH 14/27] ahci: use ata_wait_after_reset() instead of ata_sff_wait_ready() Tejun Heo
2008-03-25 13:16 ` [PATCH 15/27] libata: move generic hardreset code from sata_sff_hardreset() to sata_link_hardreset() Tejun Heo
2008-03-25 13:16 ` [PATCH 16/27] libata: implement and use sata_std_hardreset() Tejun Heo
2008-03-25 13:16 ` [PATCH 17/27] libata: clear SError after link resume Tejun Heo
2008-03-25 13:16 ` [PATCH 18/27] libata: move PMP SCR access failure during reset to ata_eh_reset() Tejun Heo
2008-03-25 13:16 ` [PATCH 19/27] libata: unify mechanism to request follow-up SRST Tejun Heo
2008-04-04 7:00 ` Jeff Garzik [this message]
2008-03-25 13:16 ` [PATCH 20/27] libata: add qc_fill_rtf port operation Tejun Heo
2008-03-25 13:16 ` [PATCH 21/27] libata: drop @finish_qc from ata_qc_complete_multiple() Tejun Heo
2008-03-25 13:17 ` [PATCH 22/27] libata: replace tf_read with qc_fill_rtf for non-SFF drivers Tejun Heo
2008-03-25 13:17 ` [PATCH 23/27] libata: remove check_status from " Tejun Heo
2008-03-25 13:17 ` [PATCH 24/27] libata: kill ata_noop_dev_select() Tejun Heo
2008-03-25 13:17 ` [PATCH 25/27] libata: clean up dummy port_ops Tejun Heo
2008-03-25 13:17 ` [PATCH 26/27] libata: don't use ap->ioaddr in non-SFF drivers Tejun Heo
2008-03-25 13:17 ` [PATCH 27/27] libata: make SFF support optional Tejun Heo
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