[PATCH] net: chelsio: inline_crypto: fix Kconfig and build errors

[Randy Dunlap]

Fix build errors when TLS=m, TLS_TOE=y, and CRYPTO_DEV_CHELSIO_TLS=y.

Having (tristate) CRYPTO_DEV_CHELSIO_TLS depend on (bool) TLS_TOE
is not strong enough to prevent the bad combination of TLS=m and
CRYPTO_DEV_CHELSIO_TLS=y, so add a dependency on TLS to prevent the
problematic kconfig combination.

Fixes these build errors:

hppa-linux-ld: drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.o: in function `chtls_free_uld':
 drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.c:165: undefined reference to `tls_toe_unregister_device'
hppa-linux-ld: drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.o: in function `chtls_register_dev':
drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.c:204: undefined reference to `tls_toe_register_device'

Fixes: 44fd1c1fd821 ("chelsio/chtls: separate chelsio tls driver from crypto driver")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Vinay Kumar Yadav <vinay.yadav@xxxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: Ayush Sawal <ayush.sawal@xxxxxxxxxxx>
Cc: Rohit Maheshwari <rohitm@xxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
---
 drivers/net/ethernet/chelsio/inline_crypto/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20201016.orig/drivers/net/ethernet/chelsio/inline_crypto/Kconfig
+++ linux-next-20201016/drivers/net/ethernet/chelsio/inline_crypto/Kconfig
@@ -16,6 +16,7 @@ if CHELSIO_INLINE_CRYPTO
 config CRYPTO_DEV_CHELSIO_TLS
 	tristate "Chelsio Crypto Inline TLS Driver"
 	depends on CHELSIO_T4
+	depends on TLS
 	depends on TLS_TOE
 	help
 	  Support Chelsio Inline TLS with Chelsio crypto accelerator.