wusb: disable verification of the key generation algorithms

Verifing the key generation algorithms could take too long on a freshly
booted system (due to lack of entropy) so disable the test unless a module
parameter (debug_crypto_verify) is specified.

Signed-off-by: David Vrabel <david.vrabel@csr.com>

1 files changed, 11 insertions, 4 deletions

diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c
index c36c4389baa..0ca860305fe 100644
--- a/drivers/usb/wusbcore/crypto.c
+++ b/drivers/usb/wusbcore/crypto.c
@@ -54,6 +54,10 @@
 #define D_LOCAL 0
 #include <linux/uwb/debug.h>
 
+static int debug_crypto_verify = 0;
+
+module_param(debug_crypto_verify, int, 0);
+MODULE_PARM_DESC(debug_crypto_verify, "verify the key generation algorithms");
 
 /*
  * Block of data, as understood by AES-CCM
@@ -526,10 +530,13 @@ int wusb_crypto_init(void)
 {
         int result;
 
-        result = wusb_key_derive_verify();
-        if (result < 0)
-                return result;
-        return wusb_oob_mic_verify();
+        if (debug_crypto_verify) {
+                result = wusb_key_derive_verify();
+                if (result < 0)
+                        return result;
+                return wusb_oob_mic_verify();
+        }
+        return 0;
 }
 
 void wusb_crypto_exit(void)