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staging: most: hdm-usb: stop core from submitting buffers in case of broken pipe 

This patch ensures that no more packets are submitted by the core in
case an USB endpoint has reported a broken pipe (-EPIPE).

Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Gromm 2016-08-19 11:12:48 +02:00 committed by Greg Kroah-Hartman
parent cc28983c32
commit 72df4a55e9
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/most/hdm-usb/hdm_usb.c
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@ -580,6 +580,7 @@ static void hdm_read_completion(struct urb *urb)
switch (urb->status) { switch (urb->status) {
case -EPIPE: case -EPIPE:
dev_warn(dev, "Broken IN pipe detected\n"); dev_warn(dev, "Broken IN pipe detected\n");
most_stop_enqueue(&mdev->iface, channel);
mbo->status = MBO_E_INVAL; mbo->status = MBO_E_INVAL;
mdev->clear_work[channel].pipe = urb->pipe; mdev->clear_work[channel].pipe = urb->pipe;
schedule_work(&mdev->clear_work[channel].ws); schedule_work(&mdev->clear_work[channel].ws);
@ -936,8 +937,7 @@ static void wq_clear_halt(struct work_struct *wq_obj)
if (usb_clear_halt(mdev->usb_device, pipe)) if (usb_clear_halt(mdev->usb_device, pipe))
dev_warn(&mdev->usb_device->dev, "Failed to reset endpoint.\n"); dev_warn(&mdev->usb_device->dev, "Failed to reset endpoint.\n");
if (mdev->conf[channel].direction & MOST_CH_TX) most_resume_enqueue(&mdev->iface, channel);
most_resume_enqueue(&mdev->iface, channel);
mutex_unlock(&mdev->io_mutex); mutex_unlock(&mdev->io_mutex);
} }