linux-kernel - Re: [PATCH linux-next] : Tree for November 12 (libcrc32c)

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Date:	Thu, 13 Nov 2008 22:09:28 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	akpm <akpm@...ux-foundation.org>, linux-crypto@...r.kernel.org,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	davem@...emloft.net
Subject: Re: [PATCH linux-next] : Tree for November 12 (libcrc32c)

On Wed, Nov 12, 2008 at 01:01:05PM -0800, Randy Dunlap wrote:
> From: Randy Dunlap <randy.dunlap@...cle.com>
> 
> libcrc32c uses CRYPTO interfaces so it should depend on CRYPTO.
> 
> crypto/built-in.o: In function `crc32c_mod_init':
> crc32c.c:(.init.text+0xc): undefined reference to `crypto_register_shash'
> crypto/built-in.o: In function `crc32c_mod_fini':
> crc32c.c:(.exit.text+0xc): undefined reference to `crypto_unregister_shash'
> lib/built-in.o: In function `crc32c':
> (.text+0xfcf9): undefined reference to `crypto_shash_update'
> lib/built-in.o: In function `libcrc32c_mod_init':
> libcrc32c.c:(.init.text+0x666): undefined reference to `crypto_alloc_shash'
> lib/built-in.o: In function `libcrc32c_mod_fini':
> libcrc32c.c:(.exit.text+0xc): undefined reference to `crypto_free_tfm'
> 
> Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>

Thanks, I've fixed it as follows:

commit d9cc217c79df50f9a9f7937aeaa54d89ae198686
Author: Herbert Xu <herbert@...dor.apana.org.au>
Date:   Thu Nov 13 22:05:13 2008 +0800

    libcrc32c: Select CRYPTO in Kconfig
    
    Selecting CRYPTO_CRC32C is not enough as CRYPTO which CRYPTO_CRC32C
    depends on may be disabled.  This patch adds the select on CRYPTO.
    
    Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

diff --git a/lib/Kconfig b/lib/Kconfig
index d09edb7..963009a 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -64,6 +64,7 @@ config CRC7
 
 config LIBCRC32C
 	tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check"
+	select CRYPTO
 	select CRYPTO_CRC32C
 	help
 	  This option is provided for the case where no in-kernel-tree

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