* 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
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/hw_random.h>
+#include <linux/delay.h>
#include <asm/io.h>
}
/* 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)