staging: most: hdm-usb: make use of is_channel_healthy flag
This patch makes the write completion handler use the is_channel_healthy
flag to prevent the hdm from scheduling a second clear_halt workqueue in
case an endpoint reported a STALL condition.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/most/hdm-usb/hdm_usb.c b/drivers/staging/most/hdm-usb/hdm_usb.c
index c2ba5a1..57d6c6d 100644
--- a/drivers/staging/most/hdm-usb/hdm_usb.c
+++ b/drivers/staging/most/hdm-usb/hdm_usb.c
@@ -418,6 +418,7 @@
case -EPIPE:
dev_warn(dev, "Broken OUT pipe detected\n");
most_stop_enqueue(&mdev->iface, channel);
+ mdev->is_channel_healthy[channel] = false;
mbo->status = MBO_E_INVAL;
mdev->clear_work[channel].pipe = urb->pipe;
schedule_work(&mdev->clear_work[channel].ws);
@@ -582,6 +583,7 @@
case -EPIPE:
dev_warn(dev, "Broken IN pipe detected\n");
most_stop_enqueue(&mdev->iface, channel);
+ mdev->is_channel_healthy[channel] = false;
mbo->status = MBO_E_INVAL;
mdev->clear_work[channel].pipe = urb->pipe;
schedule_work(&mdev->clear_work[channel].ws);
@@ -938,6 +940,7 @@
if (usb_clear_halt(mdev->usb_device, pipe))
dev_warn(&mdev->usb_device->dev, "Failed to reset endpoint.\n");
+ mdev->is_channel_healthy[channel] = true;
most_resume_enqueue(&mdev->iface, channel);
mutex_unlock(&mdev->io_mutex);
}