2013/5/17 Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>:
> On Thu, 2013-05-16 at 09:59 -0700, Tim Chen wrote:
>> On Thu, 2013-05-16 at 09:22 +0200, Geert Uytterhoeven wrote:
>> > On Thu, May 16, 2013 at 5:57 AM, Xiong Zhou <jencce.kernel@xxxxxxxxx> wrote:
>> > > --- a/crypto/Kconfig
>> > > +++ b/crypto/Kconfig
>> > > @@ -378,6 +378,7 @@ config CRYPTO_CRC32_PCLMUL
>> > >
>> > > config CRYPTO_CRCT10DIF
>> > > tristate "CRCT10DIF algorithm"
>> > > + depends on CRC_T10DIF
>> >
>> > This is a library symbol, so "select CRC_T10DIF"?
>> >
>> > > select CRYPTO_HASH
>> > > help
>> > > CRC T10 Data Integrity Field computation is being cast as
>> >
>> > Gr{oetje,eeting}s,
>> >
>> > Geert
>> >
>>
>> This is the fix I think that will resolve the build issues. The generic
>> crc-t10dif transform depends on the library function crc_t10dif_generic
>> in lib/crc-t10dif.c, so "depends on CRC_T10DIF" for CRYPTO_CRCT10DIF is
>> needed.
>>
>> Now for CRC_T10DIF, we should use select CRYPTO_HASH, so it can try to
>> allocate a T10DIF transform if it is available. If not, it will simply
>> use the crc_t10dif_generic function. Loading the
>> generic t10dif crypto transform is not mandatory for the library
>> function crc_t10dif.
>>
>> Thanks for catching the issues.
>>
>> Tim
>>
cool.
>
> Need to also add select CRYPTO for CRC_T10DIF. Updated fix below:
>
>
> Signed-off-by: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>
> ---
> diff --git a/crypto/Kconfig b/crypto/Kconfig
> index d1ca631..015df24 100644
> --- a/crypto/Kconfig
> +++ b/crypto/Kconfig
> @@ -379,6 +379,7 @@ config CRYPTO_CRC32_PCLMUL
> config CRYPTO_CRCT10DIF
> tristate "CRCT10DIF algorithm"
> select CRYPTO_HASH
> + depends on CRC_T10DIF
> help
> CRC T10 Data Integrity Field computation is being cast as
> a crypto transform. This allows for faster crc t10 diff
> diff --git a/lib/Kconfig b/lib/Kconfig
> index 0cee056..6407793 100644
> --- a/lib/Kconfig
> +++ b/lib/Kconfig
> @@ -63,7 +63,8 @@ config CRC16
>
> config CRC_T10DIF
> tristate "CRC calculation for the T10 Data Integrity Field"
> - select CRYPTO_CRCT10DIF
> + select CRYPTO
> + select CRYPTO_HASH
> help
> This option is only needed if a module that's not in the
> kernel tree needs to calculate CRC checks for use with the
>
>
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