From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/drivers/crypto/qcom-rng.c | 21 ++++++++++++---------
1 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/kernel/drivers/crypto/qcom-rng.c b/kernel/drivers/crypto/qcom-rng.c
index e54249c..031b5f7 100644
--- a/kernel/drivers/crypto/qcom-rng.c
+++ b/kernel/drivers/crypto/qcom-rng.c
@@ -7,6 +7,8 @@
#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/crypto.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
@@ -42,16 +44,19 @@
{
unsigned int currsize = 0;
u32 val;
+ int ret;
/* read random data from hardware */
do {
- val = readl_relaxed(rng->base + PRNG_STATUS);
- if (!(val & PRNG_STATUS_DATA_AVAIL))
- break;
+ ret = readl_poll_timeout(rng->base + PRNG_STATUS, val,
+ val & PRNG_STATUS_DATA_AVAIL,
+ 200, 10000);
+ if (ret)
+ return ret;
val = readl_relaxed(rng->base + PRNG_DATA_OUT);
if (!val)
- break;
+ return -EINVAL;
if ((max - currsize) >= WORD_SZ) {
memcpy(data, &val, WORD_SZ);
@@ -64,7 +69,7 @@
}
} while (currsize < max);
- return currsize;
+ return 0;
}
static int qcom_rng_generate(struct crypto_rng *tfm,
@@ -86,7 +91,7 @@
mutex_unlock(&rng->lock);
clk_disable_unprepare(rng->clk);
- return 0;
+ return ret;
}
static int qcom_rng_seed(struct crypto_rng *tfm, const u8 *seed,
@@ -153,7 +158,6 @@
static int qcom_rng_probe(struct platform_device *pdev)
{
- struct resource *res;
struct qcom_rng *rng;
int ret;
@@ -164,8 +168,7 @@
platform_set_drvdata(pdev, rng);
mutex_init(&rng->lock);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- rng->base = devm_ioremap_resource(&pdev->dev, res);
+ rng->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(rng->base))
return PTR_ERR(rng->base);
--
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