diff options
Diffstat (limited to 'drivers/input/tablet/wacom_wac.c')
| -rw-r--r-- | drivers/input/tablet/wacom_wac.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 6264e6a8d513..fce7a09fb5db 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -1046,9 +1046,27 @@ static int wacom_bpt_irq(struct wacom_wac *wacom, size_t len) static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len) { - if (len != WACOM_PKGLEN_WIRELESS) + unsigned char *data = wacom->data; + int connected; + + if (len != WACOM_PKGLEN_WIRELESS || data[0] != 0x80) return 0; + connected = data[1] & 0x01; + if (connected) { + int pid; + + pid = get_unaligned_be16(&data[6]); + if (wacom->pid != pid) { + wacom->pid = pid; + wacom_schedule_work(wacom); + } + } else if (wacom->pid != 0) { + /* disconnected while previously connected */ + wacom->pid = 0; + wacom_schedule_work(wacom); + } + return 0; } |