Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  hwrng: core - Prevent too-small buffer sizes
  hwrng: virtio-rng - Convert to new API
  hwrng: core - Replace u32 in driver API with byte array
  crypto: ansi_cprng - Move FIPS functions under CONFIG_CRYPTO_FIPS
  crypto: testmgr - Add ghash algorithm test before provide to users
  crypto: ghash-clmulni-intel - Put proper .data section in place
  crypto: ghash-clmulni-intel - Use gas macro for PCLMULQDQ-NI and PSHUFB
  crypto: aesni-intel - Use gas macro for AES-NI instructions
  x86: Generate .byte code for some new instructions via gas macro
  crypto: ghash-intel - Fix irq_fpu_usable usage
  crypto: ghash-intel - Add PSHUFB macros
  crypto: ghash-intel - Hard-code pshufb
  crypto: ghash-intel - Fix building failure on x86_32
  crypto: testmgr - Fix warning
  crypto: ansi_cprng - Fix test in get_prng_bytes
  crypto: hash - Remove cra_u.{digest,hash}
  crypto: api - Remove digest case from procfs show handler
  crypto: hash - Remove legacy hash/digest code
  crypto: ansi_cprng - Add FIPS wrapper
  crypto: ghash - Add PCLMULQDQ accelerated implementation

1 files changed, 5 insertions, 2 deletions

diff --git a/include/linux/hw_random.h b/include/linux/hw_random.h
index 7244456e7e65..9bede7633f74 100644
--- a/include/linux/hw_random.h
+++ b/include/linux/hw_random.h
@@ -22,10 +22,12 @@
  * @cleanup:            Cleanup callback (can be NULL).
  * @data_present:       Callback to determine if data is available
  *                      on the RNG. If NULL, it is assumed that
- *                      there is always data available.
+ *                      there is always data available.  *OBSOLETE*
  * @data_read:          Read data from the RNG device.
  *                      Returns the number of lower random bytes in "data".
- *                      Must not be NULL.
+ *                      Must not be NULL.    *OSOLETE*
+ * @read:               New API. drivers can fill up to max bytes of data
+ *                      into the buffer. The buffer is aligned for any type.
  * @priv:               Private data, for use by the RNG driver.
  */
 struct hwrng {
@@ -34,6 +36,7 @@ struct hwrng {
         void (*cleanup)(struct hwrng *rng);
         int (*data_present)(struct hwrng *rng, int wait);
         int (*data_read)(struct hwrng *rng, u32 *data);
+        int (*read)(struct hwrng *rng, void *data, size_t max, bool wait);
         unsigned long priv;
 
         /* internal. */