This patch is to create driver/usb/core/port.c and move usb port related
code into it.
Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
---
drivers/usb/core/Makefile | 1 +
drivers/usb/core/hub.c | 113 +++++++--------------------------------------
drivers/usb/core/port.c | 82 ++++++++++++++++++++++++++++++++
drivers/usb/core/usb.h | 3 ++
include/linux/usb.h | 16 +++++++
5 files changed, 118 insertions(+), 97 deletions(-)
create mode 100644 drivers/usb/core/port.c
diff --git a/drivers/usb/core/Makefile b/drivers/usb/core/Makefile
index 26059b9..5e847ad 100644
--- a/drivers/usb/core/Makefile
+++ b/drivers/usb/core/Makefile
@@ -7,6 +7,7 @@ ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG
usbcore-y := usb.o hub.o hcd.o urb.o message.o driver.o
usbcore-y += config.o file.o buffer.o sysfs.o endpoint.o
usbcore-y += devio.o notify.o generic.o quirks.o devices.o
+usbcore-y += port.o
usbcore-$(CONFIG_PCI) += hcd-pci.o
usbcore-$(CONFIG_ACPI) += usb-acpi.o
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 3c85fe1c..60746aa 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -42,13 +42,6 @@
#define USB_VENDOR_GENESYS_LOGIC 0x05e3
#define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01
-struct usb_port {
- struct usb_device *child;
- struct device dev;
- struct dev_state *port_owner;
- enum usb_port_connect_type connect_type;
-};
-
struct usb_hub {
struct device *intfdev; /* the "interface" device */
struct usb_device *hdev;
@@ -170,9 +163,6 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem);
#define HUB_DEBOUNCE_STEP 25
#define HUB_DEBOUNCE_STABLE 100
-#define to_usb_port(_dev) \
- container_of(_dev, struct usb_port, dev)
-
static int usb_reset_and_verify_device(struct usb_device *udev);
static inline char *portspeed(struct usb_hub *hub, int portstatus)
@@ -1237,57 +1227,12 @@ static int hub_post_reset(struct usb_interface *intf)
return 0;
}
-static void usb_port_device_release(struct device *dev)
-{
- struct usb_port *port_dev = to_usb_port(dev);
-
- usb_acpi_unregister_power_resources(dev);
- kfree(port_dev);
-}
-
static void usb_hub_remove_port_device(struct usb_hub *hub,
int port1)
{
device_unregister(&hub->ports[port1 - 1]->dev);
}
-struct device_type usb_port_device_type = {
- .name = "usb_port",
- .release = usb_port_device_release,
-};
-
-static int usb_hub_create_port_device(struct usb_hub *hub,
- int port1)
-{
- struct usb_port *port_dev = NULL;
- int retval;
-
- port_dev = kzalloc(sizeof(*port_dev), GFP_KERNEL);
- if (!port_dev) {
- retval = -ENOMEM;
- goto exit;
- }
-
- hub->ports[port1 - 1] = port_dev;
- port_dev->dev.parent = hub->intfdev;
- port_dev->dev.groups = port_dev_group;
- port_dev->dev.type = &usb_port_device_type;
- dev_set_name(&port_dev->dev, "port%d", port1);
-
- retval = device_register(&port_dev->dev);
- if (retval)
- goto error_register;
-
- usb_acpi_register_power_resources(&port_dev->dev);
-
- return 0;
-
-error_register:
- put_device(&port_dev->dev);
-exit:
- return retval;
-}
-
static int hub_configure(struct usb_hub *hub,
struct usb_endpoint_descriptor *endpoint)
{
@@ -1548,10 +1493,24 @@ static int hub_configure(struct usb_hub *hub,
if (hub->has_indicators && blinkenlights)
hub->indicator [0] = INDICATOR_CYCLE;
- for (i = 0; i < hdev->maxchild; i++)
- if (usb_hub_create_port_device(hub, i + 1) < 0)
+ for (i = 0; i < hdev->maxchild; i++) {
+ struct usb_port *port_dev = NULL;
+
+ port_dev = kzalloc(sizeof(*port_dev), GFP_KERNEL);
+ if (!port_dev) {
+ dev_err(hub->intfdev,
+ "couldn't create port%d device due to lack mem.\n", i + 1);
+ continue;
+ }
+
+ hub->ports[i] = port_dev;
+
+ if (usb_hub_create_port_device(hub->intfdev, i + 1, port_dev) < 0) {
dev_err(hub->intfdev,
"couldn't create port%d device.\n", i + 1);
+ hub->ports[i] = NULL;
+ }
+ }
if (!hub_is_superspeed(hdev)) {
for (i = 1; i <= hdev->maxchild; i++)
@@ -4765,46 +4724,6 @@ static int hub_thread(void *__unused)
return 0;
}
-static ssize_t show_port_connect_type(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct usb_port *port_dev = to_usb_port(dev);
- char *result;
-
- switch (port_dev->connect_type) {
- case USB_PORT_CONNECT_TYPE_HOT_PLUG:
- result = "hotplug";
- break;
- case USB_PORT_CONNECT_TYPE_HARD_WIRED:
- result = "hardwired";
- break;
- case USB_PORT_NOT_USED:
- result = "not used";
- break;
- default:
- result = "unknown";
- break;
- }
-
- return sprintf(buf, "%s\n", result);
-}
-static DEVICE_ATTR(connect_type, S_IRUGO, show_port_connect_type,
- NULL);
-
-static struct attribute *port_dev_attrs[] = {
- &dev_attr_connect_type.attr,
- NULL,
-};
-
-static struct attribute_group port_dev_attr_grp = {
- .attrs = port_dev_attrs,
-};
-
-static const struct attribute_group *port_dev_group[] = {
- &port_dev_attr_grp,
- NULL,
-};
-
static const struct usb_device_id hub_id_table[] = {
{ .match_flags = USB_DEVICE_ID_MATCH_VENDOR
| USB_DEVICE_ID_MATCH_INT_CLASS,
diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c
new file mode 100644
index 0000000..6523a03
--- /dev/null
+++ b/drivers/usb/core/port.c
@@ -0,0 +1,82 @@
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#include "usb.h"
+
+static ssize_t show_port_connect_type(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct usb_port *port_dev = to_usb_port(dev);
+ char *result;
+
+ switch (port_dev->connect_type) {
+ case USB_PORT_CONNECT_TYPE_HOT_PLUG:
+ result = "hotplug";
+ break;
+ case USB_PORT_CONNECT_TYPE_HARD_WIRED:
+ result = "hardwired";
+ break;
+ case USB_PORT_NOT_USED:
+ result = "not used";
+ break;
+ default:
+ result = "unknown";
+ break;
+ }
+
+ return sprintf(buf, "%s\n", result);
+}
+static DEVICE_ATTR(connect_type, S_IRUGO, show_port_connect_type,
+ NULL);
+
+static struct attribute *port_dev_attrs[] = {
+ &dev_attr_connect_type.attr,
+ NULL,
+};
+
+static struct attribute_group port_dev_attr_grp = {
+ .attrs = port_dev_attrs,
+};
+
+static const struct attribute_group *port_dev_group[] = {
+ &port_dev_attr_grp,
+ NULL,
+};
+
+static void usb_port_device_release(struct device *dev)
+{
+ struct usb_port *port_dev = to_usb_port(dev);
+
+ usb_acpi_unregister_power_resources(dev);
+ kfree(port_dev);
+}
+
+struct device_type usb_port_device_type = {
+ .name = "usb_port",
+ .release = usb_port_device_release,
+};
+
+int usb_hub_create_port_device(struct device *intfdev,
+ int port1, struct usb_port *port_dev)
+{
+ int retval;
+
+ port_dev->dev.parent = intfdev;
+ port_dev->dev.groups = port_dev_group;
+ port_dev->dev.type = &usb_port_device_type;
+ dev_set_name(&port_dev->dev, "port%d", port1);
+
+ retval = device_register(&port_dev->dev);
+ if (retval)
+ goto error_register;
+
+ usb_acpi_register_power_resources(&port_dev->dev);
+
+ return 0;
+
+error_register:
+ put_device(&port_dev->dev);
+ return retval;
+}
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 38958fb..de7434b 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -60,6 +60,9 @@ extern void usb_hub_cleanup(void);
extern int usb_major_init(void);
extern void usb_major_cleanup(void);
+extern int usb_hub_create_port_device(struct device *intfdev,
+ int port1, struct usb_port *port_dev);
+
#ifdef CONFIG_PM
extern int usb_suspend(struct device *dev, pm_message_t msg);
diff --git a/include/linux/usb.h b/include/linux/usb.h
index e996bb6..c1f1346 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -572,6 +572,22 @@ struct usb_device {
};
#define to_usb_device(d) container_of(d, struct usb_device, dev)
+/**
+ * struct usb port - kernel's representation of a usb port
+ * @child: usb device attatched to the port
+ * @dev: generic device interface
+ * @port_owner: port's owner
+ * @connect_type: port's connect type
+ */
+struct usb_port {
+ struct usb_device *child;
+ struct device dev;
+ struct dev_state *port_owner;
+ enum usb_port_connect_type connect_type;
+};
+#define to_usb_port(_dev) \
+ container_of(_dev, struct usb_port, dev)
+
static inline struct usb_device *interface_to_usbdev(struct usb_interface *intf)
{
return to_usb_device(intf->dev.parent);
--
1.7.10.4
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