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.gr...@microchip.com>
---
drivers/staging/most/hdm-usb/hdm_usb.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/staging/most/hdm-usb/hdm_usb.c
b/drivers/staging/most/hdm-usb/hdm_usb.c
index ab0f72e..1b4f3ed 100644
--- a/drivers/staging/most/hdm-usb/hdm_usb.c
+++ b/drivers/staging/most/hdm-usb/hdm_usb.c
@@ -418,6 +418,7 @@ static void hdm_write_completion(struct urb *urb)
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 @@ static void hdm_read_completion(struct urb *urb)
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);
@@ -940,6 +942,7 @@ static void wq_clear_halt(struct work_struct *wq_obj)
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);
}
--
1.9.1
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