linux-kernel - Re: [2.6 patch] xtensa: don't offer ATA

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Message-ID: <20080421193927.GA2633@cs181133002.pp.htv.fi>
Date:	Mon, 21 Apr 2008 22:39:27 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Jeff Garzik <jgarzik@...ox.com>
Cc:	chris@...kel.net, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [2.6 patch] xtensa: don't offer ATA

On Thu, Apr 17, 2008 at 03:39:29PM -0400, Jeff Garzik wrote:
> Adrian Bunk wrote:
>> Trying to build libata for xtensa fails with the following error:
>>
>> <--  snip  -->
>>
>> ...
>>   CC [M]  drivers/ata/libata-core.o
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c: In function 'ata_devchk':
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c:1034: error: implicit declaration of function 'iowrite8'
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c:1043: error: implicit declaration of function 'ioread8'
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c: In function 'ata_data_xfer':
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c:5027: error: implicit declaration of function 'ioread16_rep'
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c:5029: error: implicit declaration of function 'iowrite16_rep'
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c:5037: error: implicit declaration of function 'ioread16'
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c:5041: error: implicit declaration of function 'iowrite16'
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c: In function 'ata_wait_register':
>> /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-core.c:7700: error: implicit declaration of function 'ioread32'
>> make[3]: *** [drivers/ata/libata-core.o] Error 1
>>
>> <--  snip  -->
>>
>> Signed-off-by: Adrian Bunk <bunk@...nel.org>
>>
>> ---
>> aa579e7ab065e41a9d1e27e1f4b7af6b0508018c diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
>> index 25aba69..f34e9d1 100644
>> --- a/drivers/ata/Kconfig
>> +++ b/drivers/ata/Kconfig
>> @@ -6,7 +6,7 @@ menuconfig ATA
>>  	tristate "Serial ATA (prod) and Parallel ATA (experimental) drivers"
>>  	depends on HAS_IOMEM
>>  	depends on BLOCK
>> -	depends on !(M32R || M68K) || BROKEN
>> +	depends on !(M32R || M68K || XTENSA) || BROKEN
>>  	depends on !SUN4 || BROKEN
>>  	select SCSI
>
> XTENSA offers HAS_IOMEM but not iomem functions?  That seems like the  
> problem to me.

Chris, can you comment on this?

> Overall, we should not be adding specific arches to an exclusion list,  
> we should defining HAS_IOFOO or MISSING_IOFOO or another symbol in the  
> appropriate arch.
>
> 	Jeff

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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