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[3.13.y-ckt,102/136] crypto: crc32c - Fix crc32c soft dependency

Message ID 1454436931-22481-103-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa Feb. 2, 2016, 6:14 p.m. UTC 
3.13.11-ckt34 -stable review patch.  If anyone has any objections, please let me know.

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

From: Jean Delvare <jdelvare@suse.de>

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

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@cisco.com>");
 MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations");
 MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: crc32c");