[3.13.y-ckt stable] Patch "crypto: crc32c - Fix crc32c soft dependency" has been added to the 3.13.y-ckt tree

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    crypto: crc32c - Fix crc32c soft dependency

to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11-ckt34.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

---8<------------------------------------------------------------

>From a24b52b675ac331d1ee76c9f986d4b0559206b2b Mon Sep 17 00:00:00 2001
From: Jean Delvare <jdelvare at suse.de>
Date: Mon, 18 Jan 2016 17:06:05 +0100
Subject: crypto: crc32c - Fix crc32c soft dependency

commit fd7f6727102a1ccf6b4c1dfcc631f9b546526b26 upstream.

I don't think it makes sense for a module to have a soft dependency
on itself. This seems quite cyclic by nature and I can't see what
purpose it could serve.

OTOH libcrc32c calls crypto_alloc_shash("crc32c", 0, 0) so it pretty
much assumes that some incarnation of the "crc32c" hash algorithm has
been loaded. Therefore it makes sense to have the soft dependency
there (as crc-t10dif does.)

Cc: Tim Chen <tim.c.chen at linux.intel.com>
Cc: "David S. Miller" <davem at davemloft.net>
Signed-off-by: Jean Delvare <jdelvare at suse.de>
Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au>
[ kamal: backport to 3.13-stable: only needs the libcrc32.c addition ]
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 lib/libcrc32c.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/libcrc32c.c b/lib/libcrc32c.c
index 244f548..2484a6c 100644
--- a/lib/libcrc32c.c
+++ b/lib/libcrc32c.c
@@ -79,3 +79,4 @@ module_exit(libcrc32c_mod_fini);
 MODULE_AUTHOR("Clay Haapala <chaapala at cisco.com>");
 MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations");
 MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: crc32c");
--
1.9.1