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authorAlan Stern <stern@rowland.harvard.edu>2006-06-01 13:55:28 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2006-06-21 15:04:15 -0700
commitdf9a1f482d1252045210f50048911e2efba61e62 (patch)
treea2a581e278e9ef6ede4b58ef73d3388510f06064 /drivers/usb
parent47104b0dd32cec467574822b0dc3517b3de3f0ad (diff)
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[PATCH] usbhid: use usb_reset_composite_device
This patch (as702) makes usbhid use the new usb_reset_composite_device API. Now HID interfaces can coexist with other interfaces on the same device, and a reset can safely be requested by any of the drivers. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/input/hid-core.c37
1 files changed, 32 insertions, 5 deletions
diff --git a/drivers/usb/input/hid-core.c b/drivers/usb/input/hid-core.c
index c6051be..17b6e6a 100644
--- a/drivers/usb/input/hid-core.c
+++ b/drivers/usb/input/hid-core.c
@@ -944,21 +944,28 @@ static void hid_reset(void *_hid)
dev_dbg(&hid->intf->dev, "resetting device\n");
rc = rc_lock = usb_lock_device_for_reset(hid->dev, hid->intf);
if (rc_lock >= 0) {
- rc = usb_reset_device(hid->dev);
+ rc = usb_reset_composite_device(hid->dev, hid->intf);
if (rc_lock)
usb_unlock_device(hid->dev);
}
clear_bit(HID_RESET_PENDING, &hid->iofl);
- if (rc == 0) {
- hid->retry_delay = 0;
- if (hid_start_in(hid))
+ switch (rc) {
+ case 0:
+ if (!test_bit(HID_IN_RUNNING, &hid->iofl))
hid_io_error(hid);
- } else if (!(rc == -ENODEV || rc == -EHOSTUNREACH || rc == -EINTR))
+ break;
+ default:
err("can't reset device, %s-%s/input%d, status %d",
hid->dev->bus->bus_name,
hid->dev->devpath,
hid->ifnum, rc);
+ /* FALLTHROUGH */
+ case -EHOSTUNREACH:
+ case -ENODEV:
+ case -EINTR:
+ break;
+ }
}
/* Main I/O error handler */
@@ -2063,11 +2070,29 @@ static int hid_resume(struct usb_interface *intf)
int status;
clear_bit(HID_SUSPENDED, &hid->iofl);
+ hid->retry_delay = 0;
status = hid_start_in(hid);
dev_dbg(&intf->dev, "resume status %d\n", status);
return status;
}
+/* Treat USB reset pretty much the same as suspend/resume */
+static void hid_pre_reset(struct usb_interface *intf)
+{
+ /* FIXME: What if the interface is already suspended? */
+ hid_suspend(intf, PMSG_ON);
+}
+
+static void hid_post_reset(struct usb_interface *intf)
+{
+ struct usb_device *dev = interface_to_usbdev (intf);
+
+ hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
+ /* FIXME: Any more reinitialization needed? */
+
+ hid_resume(intf);
+}
+
static struct usb_device_id hid_usb_ids [] = {
{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
.bInterfaceClass = USB_INTERFACE_CLASS_HID },
@@ -2082,6 +2107,8 @@ static struct usb_driver hid_driver = {
.disconnect = hid_disconnect,
.suspend = hid_suspend,
.resume = hid_resume,
+ .pre_reset = hid_pre_reset,
+ .post_reset = hid_post_reset,
.id_table = hid_usb_ids,
};