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-rw-r--r--drivers/hid/usbhid/hid-core.c72
-rw-r--r--drivers/hid/usbhid/hiddev.c5
-rw-r--r--drivers/hid/usbhid/usbhid.h1
3 files changed, 51 insertions, 27 deletions
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 705a43c..606369e 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -20,6 +20,7 @@
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/mm.h>
+#include <linux/mutex.h>
#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <asm/unaligned.h>
@@ -776,20 +777,11 @@ static int usbhid_start(struct hid_device *hid)
struct usb_interface *intf = to_usb_interface(hid->dev.parent);
struct usb_host_interface *interface = intf->cur_altsetting;
struct usb_device *dev = interface_to_usbdev(intf);
- struct usbhid_device *usbhid;
+ struct usbhid_device *usbhid = hid->driver_data;
unsigned int n, insize = 0;
int ret;
- WARN_ON(hid->driver_data);
-
- usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL);
- if (usbhid == NULL) {
- ret = -ENOMEM;
- goto err;
- }
-
- hid->driver_data = usbhid;
- usbhid->hid = hid;
+ clear_bit(HID_DISCONNECTED, &usbhid->iofl);
usbhid->bufsize = HID_MIN_BUFFER_SIZE;
hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize);
@@ -856,12 +848,6 @@ static int usbhid_start(struct hid_device *hid)
}
}
- if (!usbhid->urbin) {
- err_hid("couldn't find an input interrupt endpoint");
- ret = -ENODEV;
- goto fail;
- }
-
init_waitqueue_head(&usbhid->wait);
INIT_WORK(&usbhid->reset_work, hid_reset);
setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid);
@@ -888,15 +874,18 @@ static int usbhid_start(struct hid_device *hid)
usbhid_init_reports(hid);
hid_dump_device(hid);
+ set_bit(HID_STARTED, &usbhid->iofl);
+
return 0;
fail:
usb_free_urb(usbhid->urbin);
usb_free_urb(usbhid->urbout);
usb_free_urb(usbhid->urbctrl);
+ usbhid->urbin = NULL;
+ usbhid->urbout = NULL;
+ usbhid->urbctrl = NULL;
hid_free_buffers(dev, hid);
- kfree(usbhid);
-err:
return ret;
}
@@ -907,6 +896,7 @@ static void usbhid_stop(struct hid_device *hid)
if (WARN_ON(!usbhid))
return;
+ clear_bit(HID_STARTED, &usbhid->iofl);
spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
set_bit(HID_DISCONNECTED, &usbhid->iofl);
spin_unlock_irq(&usbhid->inlock);
@@ -929,10 +919,11 @@ static void usbhid_stop(struct hid_device *hid)
usb_free_urb(usbhid->urbin);
usb_free_urb(usbhid->urbctrl);
usb_free_urb(usbhid->urbout);
+ usbhid->urbin = NULL; /* don't mess up next start */
+ usbhid->urbctrl = NULL;
+ usbhid->urbout = NULL;
hid_free_buffers(hid_to_usb_dev(hid), hid);
- kfree(usbhid);
- hid->driver_data = NULL;
}
static struct hid_ll_driver usb_hid_driver = {
@@ -946,14 +937,26 @@ static struct hid_ll_driver usb_hid_driver = {
static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
+ struct usb_host_interface *interface = intf->cur_altsetting;
struct usb_device *dev = interface_to_usbdev(intf);
+ struct usbhid_device *usbhid;
struct hid_device *hid;
+ unsigned int n, has_in = 0;
size_t len;
int ret;
dbg_hid("HID probe called for ifnum %d\n",
intf->altsetting->desc.bInterfaceNumber);
+ for (n = 0; n < interface->desc.bNumEndpoints; n++)
+ if (usb_endpoint_is_int_in(&interface->endpoint[n].desc))
+ has_in++;
+ if (!has_in) {
+ dev_err(&intf->dev, "couldn't find an input interrupt "
+ "endpoint\n");
+ return -ENODEV;
+ }
+
hid = hid_allocate_device();
if (IS_ERR(hid))
return PTR_ERR(hid);
@@ -972,6 +975,9 @@ static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
hid->vendor = le16_to_cpu(dev->descriptor.idVendor);
hid->product = le16_to_cpu(dev->descriptor.idProduct);
hid->name[0] = 0;
+ if (intf->cur_altsetting->desc.bInterfaceProtocol ==
+ USB_INTERFACE_PROTOCOL_MOUSE)
+ hid->type = HID_TYPE_USBMOUSE;
if (dev->manufacturer)
strlcpy(hid->name, dev->manufacturer, sizeof(hid->name));
@@ -997,14 +1003,25 @@ static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
hid->uniq[0] = 0;
+ usbhid = kzalloc(sizeof(*usbhid), GFP_KERNEL);
+ if (usbhid == NULL) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ hid->driver_data = usbhid;
+ usbhid->hid = hid;
+
ret = hid_add_device(hid);
if (ret) {
if (ret != -ENODEV)
dev_err(&intf->dev, "can't add hid device: %d\n", ret);
- goto err;
+ goto err_free;
}
return 0;
+err_free:
+ kfree(usbhid);
err:
hid_destroy_device(hid);
return ret;
@@ -1013,11 +1030,14 @@ err:
static void hid_disconnect(struct usb_interface *intf)
{
struct hid_device *hid = usb_get_intfdata(intf);
+ struct usbhid_device *usbhid;
if (WARN_ON(!hid))
return;
+ usbhid = hid->driver_data;
hid_destroy_device(hid);
+ kfree(usbhid);
}
static int hid_suspend(struct usb_interface *intf, pm_message_t message)
@@ -1025,10 +1045,13 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message)
struct hid_device *hid = usb_get_intfdata (intf);
struct usbhid_device *usbhid = hid->driver_data;
+ if (!test_bit(HID_STARTED, &usbhid->iofl))
+ return 0;
+
spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
set_bit(HID_SUSPENDED, &usbhid->iofl);
spin_unlock_irq(&usbhid->inlock);
- del_timer(&usbhid->io_retry);
+ del_timer_sync(&usbhid->io_retry);
usb_kill_urb(usbhid->urbin);
dev_dbg(&intf->dev, "suspend\n");
return 0;
@@ -1040,6 +1063,9 @@ static int hid_resume(struct usb_interface *intf)
struct usbhid_device *usbhid = hid->driver_data;
int status;
+ if (!test_bit(HID_STARTED, &usbhid->iofl))
+ return 0;
+
clear_bit(HID_SUSPENDED, &usbhid->iofl);
usbhid->retry_delay = 0;
status = hid_start_in(hid);
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index babd65d..83e851a 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -242,8 +242,6 @@ static int hiddev_release(struct inode * inode, struct file * file)
struct hiddev_list *list = file->private_data;
unsigned long flags;
- hiddev_fasync(-1, file, 0);
-
spin_lock_irqsave(&list->hiddev->list_lock, flags);
list_del(&list->node);
spin_unlock_irqrestore(&list->hiddev->list_lock, flags);
@@ -436,8 +434,7 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd,
if (copy_to_user(user_arg, uref, sizeof(*uref)))
goto fault;
- kfree(uref_multi);
- return 0;
+ goto goodreturn;
default:
if (cmd != HIDIOCGUSAGE &&
diff --git a/drivers/hid/usbhid/usbhid.h b/drivers/hid/usbhid/usbhid.h
index abedb13..332abcd 100644
--- a/drivers/hid/usbhid/usbhid.h
+++ b/drivers/hid/usbhid/usbhid.h
@@ -27,6 +27,7 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/list.h>
+#include <linux/mutex.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
generated by cgit v0.10.2 at 2024-11-18 16:13:52 (GMT)