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usb: XHCI shall not halt isochronous endpoints

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According to the XHCI spec (4.10.2) the controller
never halts isochronous endpoints. This commit prevent
stop of isochronous streaming when sporadic errors
status received from backends.

Signed-off-by: Yuri Benditovich <yuri.benditovich@janustech.com>
Message-id: 20190128200444.5128-2-yuri.benditovich@janustech.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Yuri Benditovich 2019-01-28 20:05:07 +00:00 committed by Gerd Hoffmann
parent 75a49fc61a
commit a587c832a3
1 changed files with 5 additions and 0 deletions
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5
hw/usb/hcd-xhci.c
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@ -1571,6 +1571,11 @@ static void xhci_stall_ep(XHCITransfer *xfer)
uint32_t err;
XHCIStreamContext *sctx;
if (epctx->type == ET_ISO_IN || epctx->type == ET_ISO_OUT) {
/* never halt isoch endpoints, 4.10.2 */
return;
}
if (epctx->nr_pstreams) {
sctx = xhci_find_stream(epctx, xfer->streamid, &err);
if (sctx == NULL) {