Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

[pandora-kernel.git] / drivers / char / hw_random / omap-rng.c

diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index a01d796..7e31995 100644 (file)
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -1,5 +1,5 @@
 /*
- * driver/char/hw_random/omap-rng.c
+ * drivers/char/hw_random/omap-rng.c
  *
  * RNG driver for TI OMAP CPU family
  *
@@ -10,7 +10,7 @@
  * Mostly based on original driver:
  *
  * Copyright (C) 2005 Nokia Corporation
- * Author: Juha Yrj��<juha.yrjola@nokia.com>
+ * Author: Juha Yrjölä <juha.yrjola@nokia.com>
  *
  * This file is licensed under  the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
@@ -29,6 +29,7 @@
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/hw_random.h>
+#include <linux/delay.h>
 
 #include <asm/io.h>
 
@@ -65,9 +66,17 @@ static void omap_rng_write_reg(int reg, u32 val)
 }
 
 /* REVISIT: Does the status bit really work on 16xx? */
-static int omap_rng_data_present(struct hwrng *rng)
+static int omap_rng_data_present(struct hwrng *rng, int wait)
 {
-       return omap_rng_read_reg(RNG_STAT_REG) ? 0 : 1;
+       int data, i;
+
+       for (i = 0; i < 20; i++) {
+               data = omap_rng_read_reg(RNG_STAT_REG) ? 0 : 1;
+               if (data || !wait)
+                       break;
+               udelay(10);
+       }
+       return data;
 }
 
 static int omap_rng_data_read(struct hwrng *rng, u32 *data)