From: Tejun Heo <tj@kernel.org>
To: Suman Tripathi <stripathi@apm.com>
Cc: olof@lixom.net, arnd@arndb.de, linux-scsi@vger.kernel.org,
linux-ide@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, ddutile@redhat.com,
jcm@redhat.com, patches@apm.com, Loc Ho <lho@apm.com>
Subject: Re: [PATCH v3 2/2] ata: Fix the dma state machine lockup for the IDENTIFY DEVICE PIO mode command.
Date: Thu, 19 Jun 2014 10:10:47 -0400 [thread overview]
Message-ID: <20140619141047.GA26904@htj.dyndns.org> (raw)
In-Reply-To: <1403160654-31612-1-git-send-email-stripathi@apm.com>
On Thu, Jun 19, 2014 at 12:20:54PM +0530, Suman Tripathi wrote:
> + /*
> + * Restart the dma engine if the last cmd issued
> + * is IDENTIFY DEVICE command
> + */
> + if (unlikely(ctx->last_cmd[ap->port_no] == ATA_CMD_ID_ATA))
> + ahci_restart_engine(ap);
Is it really only for IDENTIFY? Are other PIO commands okay? The
previous version applied it to all PIO commands, right?
--
tejun
next prev parent reply other threads:[~2014-06-19 14:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-19 6:50 [PATCH v3 2/2] ata: Fix the dma state machine lockup for the IDENTIFY DEVICE PIO mode command Suman Tripathi
2014-06-19 14:10 ` Tejun Heo [this message]
[not found] ` <CAOHikRAX1NfeCRWVJtv_FTHHheYxU5uKVk_hytdEmb_j-5_wnA@mail.gmail.com>
2014-06-19 14:21 ` Tejun Heo
[not found] ` <CAOHikRAaMaMc1zHU3B_Qqg8fRndCqHQTDR7wpCoaS_kafkgzdw@mail.gmail.com>
2014-06-19 14:33 ` Tejun Heo
2014-06-19 14:21 ` Tejun Heo
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