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[media] lirc_imon: use complete() instead complete_all()

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There is only one waiter for the completion, therefore there
is no need to use complete_all(). Let's make that clear by
using complete() instead of complete_all().

While we are at it, we do a small optimization with the
reinitialization of the completion before we use it.

The usage pattern of the completion is:

waiter context                          waker context

send_packet()
  reinit_completion()
  usb_sumbit_urb()
  wait_for_completion_interruptible()

                                        usb_tx_callback()
                                          complete()

                                        imon_disconnect()
                                          complete()

Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Daniel Wagner 2016-09-16 08:18:22 -03:00 committed by Mauro Carvalho Chehab
parent 7c073fffb7
commit 9b26336356
1 changed files with 4 additions and 2 deletions
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6
drivers/staging/media/lirc/lirc_imon.c
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@ -334,7 +334,7 @@ static int send_packet(struct imon_context *context)
context->tx_urb->actual_length = 0;
init_completion(&context->tx.finished);
reinit_completion(&context->tx.finished);
atomic_set(&context->tx.busy, 1);
retval = usb_submit_urb(context->tx_urb, GFP_KERNEL);
@ -497,6 +497,8 @@ static int ir_open(void *data)
context->rx.initial_space = 1;
context->rx.prev_bit = 0;
init_completion(&context->tx.finished);
context->ir_isopen = 1;
dev_info(context->driver->dev, "IR port opened\n");
@ -930,7 +932,7 @@ static void imon_disconnect(struct usb_interface *interface)
/* Abort ongoing write */
if (atomic_read(&context->tx.busy)) {
usb_kill_urb(context->tx_urb);
complete_all(&context->tx.finished);
complete(&context->tx.finished);
}
context->dev_present = 0;