From: Daniel Wagner <daniel.wagner@xxxxxxxxxxxx>
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()
init_completion()
usb_submit_urb()
wait_for_completion_interruptible()
usb_tx_callback()
complete()
imon_disonnect()
complete()
Signed-off-by: Daniel Wagner <daniel.wagner@xxxxxxxxxxxx>
---
drivers/media/rc/imon.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
index 65f80b8..38cdfd6 100644
--- a/drivers/media/rc/imon.c
+++ b/drivers/media/rc/imon.c
@@ -611,7 +611,7 @@ static int send_packet(struct imon_context *ictx)
ictx->tx_urb->actual_length = 0;
}
- init_completion(&ictx->tx.finished);
+ reinit_completion(&ictx->tx.finished);
ictx->tx.busy = true;
smp_rmb(); /* ensure later readers know we're busy */
@@ -2233,6 +2233,8 @@ static struct imon_context *imon_init_intf0(struct usb_interface *intf,
ictx->tx_urb = tx_urb;
ictx->rf_device = false;
+ init_completion(&ictx->tx.finished);
+
ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor);
ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct);
@@ -2511,7 +2513,7 @@ static void imon_disconnect(struct usb_interface *interface)
/* Abort ongoing write */
if (ictx->tx.busy) {
usb_kill_urb(ictx->tx_urb);
- complete_all(&ictx->tx.finished);
+ complete(&ictx->tx.finished);
}
if (ifnum == 0) {
--
2.7.4
--
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