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
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..e6ad2e4 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -63,7 +63,7 @@ config CRC16
config CRC_T10DIF
tristate "CRC calculation for the T10 Data Integrity Field"
- select CRYPTO_CRCT10DIF
+ 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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