From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/drivers/soc/ux500/ux500-soc-id.c | 39 +++++++++++++++++++++------------------
1 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/kernel/drivers/soc/ux500/ux500-soc-id.c b/kernel/drivers/soc/ux500/ux500-soc-id.c
index 6c1be74..27d6e25 100644
--- a/kernel/drivers/soc/ux500/ux500-soc-id.c
+++ b/kernel/drivers/soc/ux500/ux500-soc-id.c
@@ -1,8 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
- * License terms: GNU General Public License (GPL) version 2
*/
#include <linux/kernel.h>
@@ -146,9 +146,8 @@
return kasprintf(GFP_KERNEL, "%s", "Unknown");
}
-static ssize_t ux500_get_process(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+static ssize_t
+process_show(struct device *dev, struct device_attribute *attr, char *buf)
{
if (dbx500_id.process == 0x00)
return sprintf(buf, "Standard\n");
@@ -156,23 +155,30 @@
return sprintf(buf, "%02xnm\n", dbx500_id.process);
}
+static DEVICE_ATTR_RO(process);
+
+static struct attribute *ux500_soc_attrs[] = {
+ &dev_attr_process.attr,
+ NULL
+};
+
+ATTRIBUTE_GROUPS(ux500_soc);
+
static const char *db8500_read_soc_id(struct device_node *backupram)
{
void __iomem *base;
- void __iomem *uid;
const char *retstr;
+ u32 uid[5];
base = of_iomap(backupram, 0);
if (!base)
return NULL;
- uid = base + 0x1fc0;
+ memcpy_fromio(uid, base + 0x1fc0, sizeof(uid));
/* Throw these device-specific numbers into the entropy pool */
- add_device_randomness(uid, 0x14);
+ add_device_randomness(uid, sizeof(uid));
retstr = kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x",
- readl((u32 *)uid+0),
- readl((u32 *)uid+1), readl((u32 *)uid+2),
- readl((u32 *)uid+3), readl((u32 *)uid+4));
+ uid[0], uid[1], uid[2], uid[3], uid[4]);
iounmap(base);
return retstr;
}
@@ -184,14 +190,11 @@
soc_dev_attr->machine = ux500_get_machine();
soc_dev_attr->family = ux500_get_family();
soc_dev_attr->revision = ux500_get_revision();
+ soc_dev_attr->custom_attr_group = ux500_soc_groups[0];
}
-
-static const struct device_attribute ux500_soc_attr =
- __ATTR(process, S_IRUGO, ux500_get_process, NULL);
static int __init ux500_soc_device_init(void)
{
- struct device *parent;
struct soc_device *soc_dev;
struct soc_device_attribute *soc_dev_attr;
struct device_node *backupram;
@@ -203,19 +206,19 @@
ux500_setup_id();
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
- if (!soc_dev_attr)
+ if (!soc_dev_attr) {
+ of_node_put(backupram);
return -ENOMEM;
+ }
soc_info_populate(soc_dev_attr, backupram);
+ of_node_put(backupram);
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
kfree(soc_dev_attr);
return PTR_ERR(soc_dev);
}
-
- parent = soc_device_to_device(soc_dev);
- device_create_file(parent, &ux500_soc_attr);
return 0;
}
--
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