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>

diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c
index c36c438..0ca8603 100644 (file)
--- 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)