Input: iforce - use wait_event_interruptible_timeout

The timeout while() loops in iforce-packets.c lack a
set_current_state(TASK_INTERRUPTIBLE); call. The right solution is
to replace them with wait_event_interruptible_timeout().

Reported-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/joystick/iforce/iforce-packets.c b/drivers/input/joystick/iforce/iforce-packets.c
index 58728eb..e5a31e5 100644 (file)
--- a/drivers/input/joystick/iforce/iforce-packets.c
+++ b/drivers/input/joystick/iforce/iforce-packets.c
@@ -249,9 +249,6 @@ void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data,
 
 int iforce_get_id_packet(struct iforce *iforce, char *packet)
 {
-       DECLARE_WAITQUEUE(wait, current);
-       int timeout = HZ; /* 1 second */
-
        switch (iforce->bus) {
 
        case IFORCE_USB:
@@ -260,22 +257,13 @@ int iforce_get_id_packet(struct iforce *iforce, char *packet)
                iforce->cr.bRequest = packet[0];
                iforce->ctrl->dev = iforce->usbdev;
 
-               set_current_state(TASK_INTERRUPTIBLE);
-               add_wait_queue(&iforce->wait, &wait);
-
-               if (usb_submit_urb(iforce->ctrl, GFP_ATOMIC)) {
-                       set_current_state(TASK_RUNNING);
-                       remove_wait_queue(&iforce->wait, &wait);
+               if (usb_submit_urb(iforce->ctrl, GFP_ATOMIC))
                        return -1;
-               }
 
-               while (timeout && iforce->ctrl->status == -EINPROGRESS)
-                       timeout = schedule_timeout(timeout);
+               wait_event_interruptible_timeout(iforce->wait,
+                       iforce->ctrl->status != -EINPROGRESS, HZ);
 
-               set_current_state(TASK_RUNNING);
-               remove_wait_queue(&iforce->wait, &wait);
-
-               if (!timeout) {
+               if (iforce->ctrl->status != -EINPROGRESS) {
                        usb_unlink_urb(iforce->ctrl);
                        return -1;
                }
@@ -290,16 +278,10 @@ int iforce_get_id_packet(struct iforce *iforce, char *packet)
                iforce->expect_packet = FF_CMD_QUERY;
                iforce_send_packet(iforce, FF_CMD_QUERY, packet);
 
-               set_current_state(TASK_INTERRUPTIBLE);
-               add_wait_queue(&iforce->wait, &wait);
-
-               while (timeout && iforce->expect_packet)
-                       timeout = schedule_timeout(timeout);
-
-               set_current_state(TASK_RUNNING);
-               remove_wait_queue(&iforce->wait, &wait);
+               wait_event_interruptible_timeout(iforce->wait,
+                       !iforce->expect_packet, HZ);
 
-               if (!timeout) {
+               if (iforce->expect_packet) {
                        iforce->expect_packet = 0;
                        return -1;
                }

diff --git a/drivers/input/joystick/iforce/iforce-usb.c b/drivers/input/joystick/iforce/iforce-usb.c
index 6369a24..58600f9 100644 (file)
--- a/drivers/input/joystick/iforce/iforce-usb.c
+++ b/drivers/input/joystick/iforce/iforce-usb.c
@@ -95,6 +95,7 @@ static void iforce_usb_irq(struct urb *urb, struct pt_regs *regs)
                goto exit;
        }
 
+       wake_up(&iforce->wait);
        iforce_process_packet(iforce,
                (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1, regs);