linux-kernel - Re: [PATCH v3 1/3] drivers/block/mtip32xx: Adding header file and source for pci and block related operation

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Message-ID: <4E4AA00E.60107@micron.com>
Date:	Tue, 16 Aug 2011 10:51:26 -0600
From:	Asai Thambi S P <asamymuthupa@...ron.com>
To:	Christoph Hellwig <hch@...radead.org>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Jeff Moyer <jmoyer@...hat.com>, <linux-ide@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Jeff Garzik <jgarzik@...ox.com>,
	Jens Axboe <jaxboe@...ionio.com>
Subject: Re: [PATCH v3 1/3] drivers/block/mtip32xx: Adding header file and
 source for pci and block related operation

On 8/11/2011 4:46 PM, Christoph Hellwig wrote:
> On Thu, Aug 11, 2011 at 12:52:43PM -0600, Asai Thambi Samymuthu Pattrayasamy (asamymuthupa) [CONTRACTOR] wrote:
>> This is the first part of the new block driver,mtip32xx, for Micron
>> PCIe SSD, which contains the header file and source for pci and
>> block related operations.
> 
> There should be not split between pci/block and hardware related
> functions, as there is no logical split either.  Please remove that
> layering and merge the files into one.  Also given that the hardware
> really just is AHCI with extensions please use the constants from
> include/linux/ata.h and drivers/ata/ahci.h instead of redefining them.
> The latter might need to be move to include/linux before merging the
> driver for that, but for the next iteration a hacky relative include
> might be enough.
> 
> Also please get rid of the MTIP_USE_TASKLET, if it really is worth it
> it needs to be seletable at runtime.
> 
> I can't see any point of the CONFIG_PCI_MSI ifdefs - all the functions
> called under it are properly stubbed out if it's not enabled.

Thanks for the feedback. We have taken care of these. There are two
follow-ups to do.
  1. moving whole or part of drivers/ata/ahci.h to include/linux
  2. mtip32xx support 32-bit ioctls too. For now, we have defined compat
equivalent of struct ide_task_request_s locally. We need this support in
hdreg.h

-- 
Regards,
Asai Thambi
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