git: d970a8218e16 - stable/12 - armv8crypto: print a message on probe failure

[Mitchell Horne]

The branch stable/12 has been updated by mhorne:

URL: https://cgit.FreeBSD.org/src/commit/?id=d970a8218e16e3da8234f8b236d28919c1439090

commit d970a8218e16e3da8234f8b236d28919c1439090
Author:     Mitchell Horne <mhorne at FreeBSD.org>
AuthorDate: 2021-01-18 20:59:21 +0000
Commit:     Mitchell Horne <mhorne at FreeBSD.org>
CommitDate: 2021-01-21 17:12:00 +0000

    armv8crypto: print a message on probe failure
    
    Similar to the message printed by aesni(4), let the user know if the
    driver is unsupported by their CPU.
    
    PR:             252543
    Reported by:    gbe
    Sponsored by:   The FreeBSD Foundation
    
    (cherry picked from commit a520f5ca580fcff34fd0d9f0d64a4c165f57eb30)
---
 sys/crypto/armv8/armv8_crypto.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/crypto/armv8/armv8_crypto.c b/sys/crypto/armv8/armv8_crypto.c
index c11053cc8e17..8cfb0ec5cb9d 100644
--- a/sys/crypto/armv8/armv8_crypto.c
+++ b/sys/crypto/armv8/armv8_crypto.c
@@ -110,6 +110,9 @@ armv8_crypto_probe(device_t dev)
 	case ID_AA64ISAR0_AES_PMULL:
 		ret = 0;
 		break;
+	case ID_AA64ISAR0_AES_NONE:
+		device_printf(dev, "CPU lacks AES instructions");
+		break;
 	}
 
 	device_set_desc_copy(dev, "AES-CBC");