# \[PATCH\] md: MD\_RAID456 now depends on LIBCRC32C

- From: Guenter Roeck \<linux@roeck-us.net\>
- Date: 2015-11-06 17:31:15 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2015/11/4615316
- Thread: https://ratatoskr.run/linux-raid/2015/11/4615316/t.md

```text
Since commit 5cb2fbd6ea0d1 ("raid5-cache: use crc32c checksum"),
parisc:generic-32bit_defconfig and probably other builds fail as follows.

ERROR: "crc32c" [drivers/md/raid456.ko] undefined!

Fixes: 5cb2fbd6ea0d1 ("raid5-cache: use crc32c checksum")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/md/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 3e01e6fb3424..1d5609ca2bbe 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -127,6 +127,7 @@ config MD_RAID456
 	select ASYNC_XOR
 	select ASYNC_PQ
 	select ASYNC_RAID6_RECOV
+	select LIBCRC32C
 	---help---
 	  A RAID-5 set of N drives with a capacity of C MB per drive provides
 	  the capacity of C * (N - 1) MB, and protects against a failure
-- 
2.1.4
```