[PATCH] NFSv4: Fix NFS_V4 select RPCSEC_GSS_KRB5

[Geert Uytterhoeven]

If CONFIG_CRYPTO=n (e.g. arm/shmobile_defconfig):

    WARNING: unmet direct dependencies detected for RPCSEC_GSS_KRB5
      Depends on [n]: NETWORK_FILESYSTEMS [=y] && SUNRPC [=y] && CRYPTO [=n]
      Selected by [y]:
      - NFS_V4 [=y] && NETWORK_FILESYSTEMS [=y] && NFS_FS [=y]

As NFSv4 can work without crypto enabled, fix this by making the
selection of RPCSEC_GSS_KRB5 conditional on CRYPTO.

Fixes: e57d065277387980 ("NFS & NFSD: Update GSS dependencies")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Link: https://lore.kernel.org/oe-kbuild-all/202303241307.f6NeW9gZ-lkp@xxxxxxxxx/
Reported-by: Niklas Söderlund <niklas.soderlund@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/ZCG6tIoz0VN6d+oy@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
Nfsroot ("root=/dev/nfs rw nfsroot=aaa.bbb.ccc.ddd:/path/to/fs,tcp,v4")
works fine without CRYPTO and RPCSEC_GSS_KRB5.
CONFIG_NFSD_V4 selects CRYPTO, so was not affected by the similar change.
---
 fs/nfs/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
index 450d6c3bc05e27dd..f05c13ce0155bd69 100644
--- a/fs/nfs/Kconfig
+++ b/fs/nfs/Kconfig
@@ -75,7 +75,7 @@ config NFS_V3_ACL
 config NFS_V4
 	tristate "NFS client support for NFS version 4"
 	depends on NFS_FS
-	select RPCSEC_GSS_KRB5
+	select RPCSEC_GSS_KRB5 if CRYPTO
 	select KEYS
 	help
 	  This option enables support for version 4 of the NFS protocol
-- 
2.34.1