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/watchdog/ixp4xx_wdt.c | 14 ++++++++++++--
1 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/kernel/drivers/watchdog/ixp4xx_wdt.c b/kernel/drivers/watchdog/ixp4xx_wdt.c
index f20cc53..aae29dc 100644
--- a/kernel/drivers/watchdog/ixp4xx_wdt.c
+++ b/kernel/drivers/watchdog/ixp4xx_wdt.c
@@ -21,6 +21,7 @@
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/miscdevice.h>
+#include <linux/of.h>
#include <linux/watchdog.h>
#include <linux/init.h>
#include <linux/bitops.h>
@@ -65,7 +66,7 @@
clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
wdt_enable();
- return nonseekable_open(inode, file);
+ return stream_open(inode, file);
}
static ssize_t
@@ -135,7 +136,7 @@
heartbeat = time;
wdt_enable();
- /* Fall through */
+ fallthrough;
case WDIOC_GETTIMEOUT:
ret = put_user(heartbeat, (int *)arg);
@@ -162,6 +163,7 @@
.llseek = no_llseek,
.write = ixp4xx_wdt_write,
.unlocked_ioctl = ixp4xx_wdt_ioctl,
+ .compat_ioctl = compat_ptr_ioctl,
.open = ixp4xx_wdt_open,
.release = ixp4xx_wdt_release,
};
@@ -176,6 +178,14 @@
{
int ret;
+ /*
+ * FIXME: we bail out on device tree boot but this really needs
+ * to be fixed in a nicer way: this registers the MDIO bus before
+ * even matching the driver infrastructure, we should only probe
+ * detected hardware.
+ */
+ if (of_have_populated_dt())
+ return -ENODEV;
if (!(read_cpuid_id() & 0xf) && !cpu_is_ixp46x()) {
pr_err("Rev. A0 IXP42x CPU detected - watchdog disabled\n");
--
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