Re: [PATCH 1/7] scsi: hisi_sas: workaround v2 hw SATA IO timeout issue

From	Johannes Thumshirn <jthumshirn@suse.de>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/7] scsi: hisi_sas: workaround v2 hw SATA IO timeout issue
Date	2017-01-19 09:50 +0100
Message-ID	<t1gzT-7DU-3@gated-at.bofh.it> (permalink)
References	<t10Ya-6eP-7@gated-at.bofh.it> <t10Ya-6eP-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Thu, Jan 19, 2017 at 12:32:47AM +0800, John Garry wrote:
> From: Xiang Chen <chenxiang66@hisilicon.com>
> 
> The v2 SAS controller needs more time to detect channel idle
> and send setup link request than SATA disk does, so it is
> difficult for SAS controller to setup an STP link. Therefore it
> may cause some IO timeouts.
> 
> We need to periodically configure the SAS controller so it
> doesn't receive STP setup requests from SATA disks for a while,
> so IO can be sent during this period.
> 
> Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
> Signed-off-by: John Garry <john.garry@huawei.com>
> ---

Looks good,
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>

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Johannes Thumshirn                                          Storage
jthumshirn@suse.de                                +49 911 74053 689
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[PATCH 1/7] scsi: hisi_sas: workaround v2 hw SATA IO timeout issue John Garry <john.garry@huawei.com> - 2017-01-18 17:10 +0100
  Re: [PATCH 1/7] scsi: hisi_sas: workaround v2 hw SATA IO timeout  issue Johannes Thumshirn <jthumshirn@suse.de> - 2017-01-19 09:50 +0100

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