On 03/02/10 21:36, James Bottomley wrote:
> On Sun, 2010-02-21 at 19:46 -0800, Randy Dunlap wrote:
>> From: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
>>
>> raid_class uses scsi interfaces, so it should depend on SCSI.
>> Otherwise build errors occur when RAID_ATTRS=y and SCSI=m:
>>
>> ERROR: "raid_class_release" [drivers/scsi/mpt2sas/mpt2sas.ko] undefined!
>> ERROR: "raid_class_attach" [drivers/scsi/mpt2sas/mpt2sas.ko] undefined!
>>
>> Signed-off-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
>> ---
>> drivers/scsi/Kconfig | 14 +++++++-------
>> 1 file changed, 7 insertions(+), 7 deletions(-)
>>
>> --- linux-next-20100219.orig/drivers/scsi/Kconfig
>> +++ linux-next-20100219/drivers/scsi/Kconfig
>> @@ -1,12 +1,5 @@
>> menu "SCSI device support"
>>
>> -config RAID_ATTRS
>> - tristate "RAID Transport Class"
>> - default n
>> - depends on BLOCK
>> - ---help---
>> - Provides RAID
>> -
>> config SCSI
>> tristate "SCSI device support"
>> depends on BLOCK
>> @@ -34,6 +27,13 @@ config SCSI_DMA
>> bool
>> default n
>>
>> +config RAID_ATTRS
>> + tristate "RAID Transport Class"
>> + default n
>> + depends on BLOCK && SCSI
>> + ---help---
>> + Provides RAID
>> +
>
> This will fix the error, but it's not quite the right thing to do. the
> RAID class should be independent of SCSI, but it wants to do a SCSI
> check if SCSI is compiled in the matching routines. This gives us a
> nasty dependency, the condition being that the raid class must be m if
> SCSI is m.
>
> I think this patch does the right thing. Can someone test it on the
> config checker? Or I can just put it in linux-next and have Stephen's
> builds do it.
Acked-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
Thanks for the patch.
> Thanks,
>
> James
>
> ---
>
> diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
> index 9191d1e..75f2336 100644
> --- a/drivers/scsi/Kconfig
> +++ b/drivers/scsi/Kconfig
> @@ -1,9 +1,15 @@
> menu "SCSI device support"
>
> +config SCSI_MOD
> + tristate
> + default y if SCSI=n || SCSI=y
> + default m if SCSI=m
> +
> config RAID_ATTRS
> tristate "RAID Transport Class"
> default n
> depends on BLOCK
> + depends on SCSI_MOD
> ---help---
> Provides RAID
>
> diff --git a/drivers/scsi/raid_class.c b/drivers/scsi/raid_class.c
> index bd88349..2c146b4 100644
> --- a/drivers/scsi/raid_class.c
> +++ b/drivers/scsi/raid_class.c
> @@ -63,6 +63,7 @@ static int raid_match(struct attribute_container *cont, struct device *dev)
> * emulated RAID devices, so start with SCSI */
> struct raid_internal *i = ac_to_raid_internal(cont);
>
> +#if defined(CONFIG_SCSI) || defined(CONFIG_SCSI_MODULE)
> if (scsi_is_sdev_device(dev)) {
> struct scsi_device *sdev = to_scsi_device(dev);
>
> @@ -71,6 +72,7 @@ static int raid_match(struct attribute_container *cont, struct device *dev)
>
> return i->f->is_raid(dev);
> }
> +#endif
> /* FIXME: look at other subsystems too */
> return 0;
> }
>
>
--
~Randy
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