From e636c8d336489bf3eed5878299e6cc045bbad077 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:17:29 +0000
Subject: [PATCH] debug lk
---
kernel/drivers/usb/core/port.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/kernel/drivers/usb/core/port.c b/kernel/drivers/usb/core/port.c
index 1fe83b5..235a7c6 100644
--- a/kernel/drivers/usb/core/port.c
+++ b/kernel/drivers/usb/core/port.c
@@ -16,6 +16,15 @@
static const struct attribute_group *port_dev_group[];
+static ssize_t location_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct usb_port *port_dev = to_usb_port(dev);
+
+ return sprintf(buf, "0x%08x\n", port_dev->location);
+}
+static DEVICE_ATTR_RO(location);
+
static ssize_t connect_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -140,6 +149,7 @@
static struct attribute *port_dev_attrs[] = {
&dev_attr_connect_type.attr,
+ &dev_attr_location.attr,
&dev_attr_quirks.attr,
&dev_attr_over_current_count.attr,
NULL,
@@ -281,6 +291,14 @@
}
#endif
+static void usb_port_shutdown(struct device *dev)
+{
+ struct usb_port *port_dev = to_usb_port(dev);
+
+ if (port_dev->child)
+ usb_disable_usb2_hardware_lpm(port_dev->child);
+}
+
static const struct dev_pm_ops usb_port_pm_ops = {
#ifdef CONFIG_PM
.runtime_suspend = usb_port_runtime_suspend,
@@ -297,6 +315,7 @@
static struct device_driver usb_port_driver = {
.name = "usb",
.owner = THIS_MODULE,
+ .shutdown = usb_port_shutdown,
};
static int link_peers(struct usb_port *left, struct usb_port *right)
--
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