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Subject: Re: [RFC/RFT PATCH] scsi: pm8001: Expose HW queues for pm80xx hw
To:     Viswas.G@microchip.com, john.garry@huawei.com, jejb@linux.ibm.com,
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From:   Hannes Reinecke <hare@suse.de>
Message-ID: <23f6201d-130a-5bf3-c828-c06f0e0acfbe@suse.de>
Date:   Tue, 16 Feb 2021 19:15:44 +0100
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On 2/15/21 6:31 PM, Viswas.G@microchip.com wrote:
> Hi John,
> 
> We could test this patch and it works fine. Regarding the usage of request->tag, We have some challenges there.
> Pm80xx driver need tag for internal command as well. Tag is controller wide and we need to assign unique tag
> for internal command as well. If we use request->tag, how can we get tag for internal commands ? If driver
> allocate that, how can we make sure it will not conflict with the request->tag ?
> 
I have posted a patchset for internal tags some time ago; at the time it 
was blocked by the missing shared tagset functionality.
But seeing that we're having it now I guess I'll need to repost; that 
addresses precisely the issue you've described.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@suse.de                              +49 911 74053 688
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