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| author | Yuri Benditovich <yuri.benditovich@janustech.com> | 2019-01-28 20:05:07 +0000 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-01-30 06:47:52 +0100 |
| commit | a587c832a3f1d6d47dce93bda52c80cfa163e7cf (patch) | |
| tree | 38813ac6b9355dcf8e8638360b46a764d65786a7 /hw/usb/hcd-xhci.c | |
| parent | 75a49fc61ab32a341de00bae6295603f4a08f14e (diff) | |
| download | focaccia-qemu-a587c832a3f1d6d47dce93bda52c80cfa163e7cf.tar.gz focaccia-qemu-a587c832a3f1d6d47dce93bda52c80cfa163e7cf.zip | |
usb: XHCI shall not halt isochronous endpoints
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>
Diffstat (limited to 'hw/usb/hcd-xhci.c')
| -rw-r--r-- | hw/usb/hcd-xhci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index 8f1a01a405..1a8fd9644e 100644 --- a/hw/usb/hcd-xhci.c +++ b/hw/usb/hcd-xhci.c @@ -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) { |