[PATCH] crypto: caam/qi2 - add a CRYPTO_DEV_FSL_CAAM dependency

[Arnd Bergmann]

My previous bugfix was incomplete, we still have a broken kernel
with CRYPTO_DEV_FSL_CAAM=m and CRYPTO_DEV_FSL_DPAA2_CAAM=y:

drivers/crypto/caam/caamalg_desc.o: In function `cnstr_shdsc_aead_null_encap':
caamalg_desc.c:(.text+0x14): undefined reference to `caam_little_end'
drivers/crypto/caam/caamalg_desc.o: In function `cnstr_shdsc_aead_null_encap':
caamalg_desc.c:(.text+0x310): undefined reference to `caam_imx'
caamalg_desc.c:(.text+0x4a8): undefined reference to `caam_little_end'
drivers/crypto/caam/caamalg_desc.o: In function `cnstr_shdsc_aead_null_encap':
caamalg_desc.c:(.text+0x664): undefined reference to `caam_imx'

Everything is fine for the other combinations: if both are loadable
modules, or both are built-in, the flags work as expected, also if
only one of the two is enabled.

Add a dependency to enforce using one of the working configurations.
Overall, I'm still not happy with that dependency, but for now
it documents what the code requires.

Fixes: 52813ab24959 ("crypto: caam/qi2 - avoid double export")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/crypto/caam/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/caam/Kconfig b/drivers/crypto/caam/Kconfig
index c4b1cade55c1..4dff65e518e7 100644
--- a/drivers/crypto/caam/Kconfig
+++ b/drivers/crypto/caam/Kconfig
@@ -158,6 +158,7 @@ config CRYPTO_DEV_FSL_DPAA2_CAAM
 	tristate "QorIQ DPAA2 CAAM (DPSECI) driver"
 	depends on FSL_MC_DPIO
 	depends on NETDEVICES
+	depends on CRYPTO_DEV_FSL_CAAM || !CRYPTO_DEV_FSL_CAAM
 	select CRYPTO_DEV_FSL_CAAM_COMMON
 	select CRYPTO_BLKCIPHER
 	select CRYPTO_AUTHENC
-- 
2.20.0