From b22da3d8526a935aa31e086e63f60ff3246cb61c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 07:24:11 +0000
Subject: [PATCH] add stmac read mac form eeprom
---
kernel/drivers/xen/xenbus/xenbus_probe_frontend.c | 30 ++++++++++++++++++++++++++----
1 files changed, 26 insertions(+), 4 deletions(-)
diff --git a/kernel/drivers/xen/xenbus/xenbus_probe_frontend.c b/kernel/drivers/xen/xenbus/xenbus_probe_frontend.c
index 07896f4..4809446 100644
--- a/kernel/drivers/xen/xenbus/xenbus_probe_frontend.c
+++ b/kernel/drivers/xen/xenbus/xenbus_probe_frontend.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define DPRINTK(fmt, ...) \
@@ -18,7 +19,6 @@
#include <linux/module.h>
#include <asm/page.h>
-#include <asm/pgtable.h>
#include <asm/xen/hypervisor.h>
#include <xen/xenbus.h>
#include <xen/events.h>
@@ -125,6 +125,28 @@
return xenbus_dev_probe(dev);
}
+static void xenbus_frontend_dev_shutdown(struct device *_dev)
+{
+ struct xenbus_device *dev = to_xenbus_device(_dev);
+ unsigned long timeout = 5*HZ;
+
+ DPRINTK("%s", dev->nodename);
+
+ get_device(&dev->dev);
+ if (dev->state != XenbusStateConnected) {
+ pr_info("%s: %s: %s != Connected, skipping\n",
+ __func__, dev->nodename, xenbus_strstate(dev->state));
+ goto out;
+ }
+ xenbus_switch_state(dev, XenbusStateClosing);
+ timeout = wait_for_completion_timeout(&dev->down, timeout);
+ if (!timeout)
+ pr_info("%s: %s timeout closing device\n",
+ __func__, dev->nodename);
+ out:
+ put_device(&dev->dev);
+}
+
static const struct dev_pm_ops xenbus_pm_ops = {
.suspend = xenbus_dev_suspend,
.resume = xenbus_frontend_dev_resume,
@@ -145,7 +167,7 @@
.uevent = xenbus_uevent_frontend,
.probe = xenbus_frontend_dev_probe,
.remove = xenbus_dev_remove,
- .shutdown = xenbus_dev_shutdown,
+ .shutdown = xenbus_frontend_dev_shutdown,
.dev_groups = xenbus_dev_groups,
.pm = &xenbus_pm_ops,
@@ -379,12 +401,12 @@
case XenbusStateConnected:
xenbus_printf(XBT_NIL, fe, "state", "%d", XenbusStateClosing);
xenbus_reset_wait_for_backend(be, XenbusStateClosing);
- /* fall through */
+ fallthrough;
case XenbusStateClosing:
xenbus_printf(XBT_NIL, fe, "state", "%d", XenbusStateClosed);
xenbus_reset_wait_for_backend(be, XenbusStateClosed);
- /* fall through */
+ fallthrough;
case XenbusStateClosed:
xenbus_printf(XBT_NIL, fe, "state", "%d", XenbusStateInitialising);
--
Gitblit v1.6.2