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SubjectRe: [PATCH 15/15] hisi_sas: send three identify before phy up
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On 09/06/2016 05:36 PM, John Garry wrote:
> When the v2 hw is attached with many disks through
> an expander, there may be OOB reset resulting in a PHY
> going down after the speed is negotiated (very low
> probability).
>
> This issue is resolved by modifying the link control
> registers to send three identify frames before the PHY
> is ready (according to 6.10.3.3.2 in SAS 3.0 spec) and
> close ready when the PHY is down.
>
> Signed-off-by: NengLong Zhao <zhaonenglong@hisilicon.com>
> Signed-off-by: John Garry <john.garry@huawei.com>
> ---
> drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 20 ++++++++++++++++----
> 1 file changed, 16 insertions(+), 4 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare@suse.de +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)

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