Re: [PATCH 3/6] block: Create scsi_sense.h for SCSI and ATAPI

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On 05/22/2018 04:31 PM, Kees Cook wrote:
> On Tue, May 22, 2018 at 12:16 PM, Jens Axboe <axboe@xxxxxxxxx> wrote:
>> On 5/22/18 1:13 PM, Christoph Hellwig wrote:
>>> On Tue, May 22, 2018 at 01:09:41PM -0600, Jens Axboe wrote:
>>>> I think Martin and Christoph are objecting to moving the code to
>>>> block/scsi_ioctl.h. I don't care too much about where the code is, but
>>>> think it would be nice to have the definitions in a separate header. But
>>>> if they prefer just pulling in all of SCSI for it, well then I guess
>>>> it's pointless to move the header bits. Seems very heavy handed to me,
>>>> though.
>>>
>>> It might be heavy handed for the 3 remaining users of drivers/ide,
>>
>> Brutal :-)
> 
> Heh. I noticed a similar sense buffer use in drivers/cdrom/cdrom.c
> too. Is this okay under the same considerations?

No.  Do not select an entire subsystem.  Use depends on it instead.


> diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
> index ad9b687a236a..220ff321c102 100644
> --- a/drivers/block/Kconfig
> +++ b/drivers/block/Kconfig
> @@ -79,7 +79,7 @@ config GDROM
>         tristate "SEGA Dreamcast GD-ROM drive"
>         depends on SH_DREAMCAST
>         select CDROM
> -       select BLK_SCSI_REQUEST # only for the generic cdrom code
> +       select SCSI
>         help
>           A standard SEGA Dreamcast comes with a modified CD ROM drive called a
>           "GD-ROM" by SEGA to signify it is capable of reading special disks
> @@ -345,7 +345,7 @@ config CDROM_PKTCDVD
>         tristate "Packet writing on CD/DVD media (DEPRECATED)"
>         depends on !UML
>         select CDROM
> -       select BLK_SCSI_REQUEST
> +       select SCSI
>         help
>           Note: This driver is deprecated and will be removed from the
>           kernel in the near future!
> diff --git a/drivers/block/paride/Kconfig b/drivers/block/paride/Kconfig
> index f8bd6ef3605a..7fdfcc5eaca5 100644
> --- a/drivers/block/paride/Kconfig
> +++ b/drivers/block/paride/Kconfig
> @@ -27,7 +27,7 @@ config PARIDE_PCD
>         tristate "Parallel port ATAPI CD-ROMs"
>         depends on PARIDE
>         select CDROM
> -       select BLK_SCSI_REQUEST # only for the generic cdrom code
> +       select SCSI
>         ---help---
>           This option enables the high-level driver for ATAPI CD-ROM devices
>           connected through a parallel port. If you chose to build PARIDE
> 
>>> but as long as that stuff just keeps working I'd rather worry about
>>> everyone else, and keep the scsi code where it belongs.
>>
>> Fine with me then, hopefully we can some day kill it off.
> 
> I'll send a v2. I found a few other things to fix up (including the
> cdrom.c one).


-- 
~Randy



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