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

Randy Dunlap
2018-05-22T23:34:15Z

On 05/22/2018 04:31 PM, Kees Cook wrote:
> On Tue, May 22, 2018 at 12:16 PM, Jens Axboe <axboe@kernel.dk> 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