On 24-09-05 08:45:59, Pawel Laszczak wrote:
On 24-09-05 07:31:10, Pawel Laszczak wrote:
Fix changes incorrect usb_request->status returned during disabling endpoints. Before fix the status returned during dequeuing requests while disabling endpoint was ECONNRESET. Patch changes it to ESHUTDOWN.
Would you please explain why we need this change?
This patch is needed for UVC gadget. During stopping streaming the class starts dequeuing usb requests and controller driver returns the -ECONNRESET status. After completion requests the class or application "uvc-gadget" try to queue this request again. Changing this status to ESHUTDOWN cause that UVC assume that endpoint is disabled, or device is disconnected and stop re-queuing usb requests.
Get it. Would you please update commit message with your above explanation?
Peter
Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") cc: stable@vger.kernel.org Signed-off-by: Pawel Laszczak pawell@cadence.com
drivers/usb/cdns3/cdnsp-ring.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/cdns3/cdnsp-ring.c b/drivers/usb/cdns3/cdnsp-ring.c index 1e011560e3ae..bccc8fc143d0 100644 --- a/drivers/usb/cdns3/cdnsp-ring.c +++ b/drivers/usb/cdns3/cdnsp-ring.c @@ -718,7 +718,8 @@ int cdnsp_remove_request(struct cdnsp_device
*pdev,
seg = cdnsp_trb_in_td(pdev, cur_td->start_seg, cur_td->first_trb, cur_td->last_trb, hw_deq);
- if (seg && (pep->ep_state & EP_ENABLED))
- if (seg && (pep->ep_state & EP_ENABLED) &&
!(pep->ep_state & EP_DIS_IN_RROGRESS))request.stream_id, cur_td, &deq_state); else @@ -736,7 +737,8 @@ int cdnsp_remove_request(struct cdnsp_device
*pdev,
* During disconnecting all endpoint will be disabled so we don't * have to worry about updating dequeue pointer. */
- if (pdev->cdnsp_state & CDNSP_STATE_DISCONNECT_PENDING) {
- if (pdev->cdnsp_state & CDNSP_STATE_DISCONNECT_PENDING ||
pep->ep_state & EP_DIS_IN_RROGRESS) {-- 2.43.0