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

[Johannes Thumshirn]

On Thu, Jan 19, 2017 at 12:32:47AM +0800, John Garry wrote:
> From: Xiang Chen <chenxiang66@xxxxxxxxxxxxx>
> 
> 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@xxxxxxxxxxxxx>
> Signed-off-by: John Garry <john.garry@xxxxxxxxxx>
> ---

Looks good,
Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>

-- 
Johannes Thumshirn                                          Storage
jthumshirn@xxxxxxx                                +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850