linux-kernel - Re: [PATCH] eata: Convert eata driver as normal PCI and platform device drivers

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Date:	Wed, 2 Mar 2016 08:06:26 +1030
From:	Arthur Marsh <arthur.marsh@...ernode.on.net>
To:	Christoph Hellwig <hch@...radead.org>,
	Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	Dario Ballabio <ballabio_dario@....com>,
	"James E.J. Bottomley" <JBottomley@...n.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Hannes Reinecke <hare@...e.de>,
	"Ballabio, Dario" <dario.ballabio@....com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] eata: Convert eata driver as normal PCI and platform
 device drivers

Arthur Marsh wrote on 02/03/16 03:57:
>
>
> Christoph Hellwig wrote on 01/03/16 17:22:
>> Hi Jiang.
>>
>> I'd love to see this patch in and abuse of the old PCI API gone.
>>
>> Did you resolve the problems Arthur saw with the previous iteratons
>> of the patch?
>>
>
> I applied Jiang Liu's patch of 1st March 2016 to a clean kernel
> 4.5.0-rc6 source, removed my workaround of removing and re-adding the
> eata module before mounting file-systems that are on disks attached to
> the DPT SCSI card using the eata driver, and was able to kexec from the
> new kernel successfully.
>
> Arthur.

I spoke too soon, without removing and re-inserting the eata module 
before any filesystems on disks attached to the DPT controller were 
mounted, I'd get the following messages, similar to ones previously 
reported:

sd 0:0:6:0: tag#0 abort, mbox 1.
EATA0: abort, mbox 1 is in use.
sd 0:0:6:0: tag#0 reset, enter.
EATA0: reset, mbox 1 in reset.
EATA0: reset, board reset done, enabling interrupts.
EATA0: reset, interrupts disabled, loops 100415.
EATA0, reset, mbox 1 locked, DID_RESET, done.
EATA0: reset, exit, done.

and so on, finally hanging after printing "kexec_core: Starting new 
kernel" (I have a photo of the messages if they're needed).

So I'm still using the new patch but have to continue to remove and 
reinsert eata at start-up before any attempts to mount disks attatched 
to the DPT SCSI controller.

Arthur.