Messages in this thread | | | Subject | Re: [PATCH 15/15] hisi_sas: send three identify before phy up | From | Hannes Reinecke <> | Date | Wed, 14 Sep 2016 14:52:08 +0200 |
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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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