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>
This commit is contained in:
parent
39fd748f56
commit
fb76b099f8
|
@ -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);
|
||||
wait_event_interruptible_timeout(iforce->wait,
|
||||
!iforce->expect_packet, HZ);
|
||||
|
||||
while (timeout && iforce->expect_packet)
|
||||
timeout = schedule_timeout(timeout);
|
||||
|
||||
set_current_state(TASK_RUNNING);
|
||||
remove_wait_queue(&iforce->wait, &wait);
|
||||
|
||||
if (!timeout) {
|
||||
if (iforce->expect_packet) {
|
||||
iforce->expect_packet = 0;
|
||||
return -1;
|
||||
}
|
||||
|
|
|
@ -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);
|
||||
|
||||
|
|
Loading…
Reference in a new issue