diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hid/usbhid/hid-core.c | 36 | ||||
| -rw-r--r-- | drivers/hid/usbhid/usbhid.h | 1 |
2 files changed, 25 insertions, 12 deletions
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index ca6849a0121e..04e34b917045 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -278,18 +278,20 @@ static void hid_irq_in(struct urb *urb) usbhid->retry_delay = 0; if ((hid->quirks & HID_QUIRK_ALWAYS_POLL) && !hid->open) break; - hid_input_report(urb->context, HID_INPUT_REPORT, - urb->transfer_buffer, - urb->actual_length, 1); - /* - * autosuspend refused while keys are pressed - * because most keyboards don't wake up when - * a key is released - */ - if (hid_check_keys_pressed(hid)) - set_bit(HID_KEYS_PRESSED, &usbhid->iofl); - else - clear_bit(HID_KEYS_PRESSED, &usbhid->iofl); + if (!test_bit(HID_RESUME_RUNNING, &usbhid->iofl)) { + hid_input_report(urb->context, HID_INPUT_REPORT, + urb->transfer_buffer, + urb->actual_length, 1); + /* + * autosuspend refused while keys are pressed + * because most keyboards don't wake up when + * a key is released + */ + if (hid_check_keys_pressed(hid)) + set_bit(HID_KEYS_PRESSED, &usbhid->iofl); + else + clear_bit(HID_KEYS_PRESSED, &usbhid->iofl); + } break; case -EPIPE: /* stall */ usbhid_mark_busy(usbhid); @@ -688,6 +690,7 @@ int usbhid_open(struct hid_device *hid) goto done; } usbhid->intf->needs_remote_wakeup = 1; + set_bit(HID_RESUME_RUNNING, &usbhid->iofl); res = hid_start_in(hid); if (res) { if (res != -ENOSPC) { @@ -701,6 +704,15 @@ int usbhid_open(struct hid_device *hid) } } usb_autopm_put_interface(usbhid->intf); + + /* + * In case events are generated while nobody was listening, + * some are released when the device is re-opened. + * Wait 50 msec for the queue to empty before allowing events + * to go through hid. + */ + msleep(50); + clear_bit(HID_RESUME_RUNNING, &usbhid->iofl); } done: mutex_unlock(&hid_open_mut); diff --git a/drivers/hid/usbhid/usbhid.h b/drivers/hid/usbhid/usbhid.h index f633c24ce28b..807922b49aa4 100644 --- a/drivers/hid/usbhid/usbhid.h +++ b/drivers/hid/usbhid/usbhid.h @@ -52,6 +52,7 @@ struct usb_interface *usbhid_find_interface(int minor); #define HID_STARTED 8 #define HID_KEYS_PRESSED 10 #define HID_NO_BANDWIDTH 11 +#define HID_RESUME_RUNNING 12 /* * USB-specific HID struct, to be pointed to |