[PATCH] drbd: select CRYPTO and CRYPTO_HASH

[Christoph Böhmwalder]

DRBD uses the shash API for the data integrity, online verify and
checksum-based resync algorithms and for peer authentication, but
BLK_DEV_DRBD does not select the crypto core. With CRYPTO=n, a kernel
with DRBD built in does not link:

  ld: drbd_sender.c:(.text+0x137f): undefined reference to `crypto_shash_finup'
  ld: drbd_receiver.c:(.text+0x58f): undefined reference to `crypto_alloc_shash'

Select CRYPTO and CRYPTO_HASH.

Fixes: b411b3637fa7 ("The DRBD driver")
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@xxxxxxxxxx>
---
 drivers/block/drbd/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/block/drbd/Kconfig b/drivers/block/drbd/Kconfig
index 495a72da04c6..d707187d2cec 100644
--- a/drivers/block/drbd/Kconfig
+++ b/drivers/block/drbd/Kconfig
@@ -11,6 +11,8 @@ config BLK_DEV_DRBD
 	depends on PROC_FS && INET
 	select LRU_CACHE
 	select CRC32
+	select CRYPTO
+	select CRYPTO_HASH
 	help
 
 	  NOTE: In order to authenticate connections you have to select

base-commit: aa7014f8d7565cfea117eac36a5de0a05eba65a4
-- 
2.56.0