crc32: add help text for the algorithm select option

Add help text to the crc32 algorithm selection option in Kconfig.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/lib/Kconfig b/lib/Kconfig
index a0e5900..4a8aba2 100644 (file)
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -88,6 +88,10 @@ choice
        prompt "CRC32 implementation"
        depends on CRC32
        default CRC32_SLICEBY8
+       help
+         This option allows a kernel builder to override the default choice
+         of CRC32 algorithm.  Choose the default ("slice by 8") unless you
+         know that you need one of the others.
 
 config CRC32_SLICEBY8
        bool "Slice by 8 bytes"