Date: Wed, 7 Nov 2018 08:25:45 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r340212 - head/sys/dev/usb/controller Message-ID: <201811070825.wA78Pj6m036856@repo.freebsd.org>
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Author: hselasky Date: Wed Nov 7 08:25:44 2018 New Revision: 340212 URL: https://svnweb.freebsd.org/changeset/base/340212 Log: Sometimes the complete split packet may be queued too early and the transaction translator will return a NAK. Ignore this message and retry the complete split instead. MFC after: 3 days Sponsored by: Mellanox Technologies Modified: head/sys/dev/usb/controller/dwc_otg.c Modified: head/sys/dev/usb/controller/dwc_otg.c ============================================================================== --- head/sys/dev/usb/controller/dwc_otg.c Wed Nov 7 06:29:01 2018 (r340211) +++ head/sys/dev/usb/controller/dwc_otg.c Wed Nov 7 08:25:44 2018 (r340212) @@ -1432,6 +1432,19 @@ dwc_otg_host_data_rx(struct dwc_otg_softc *sc, struct goto receive_pkt; } } else if (td->ep_type == UE_ISOCHRONOUS) { + if (td->hcsplt != 0) { + /* + * Sometimes the complete + * split packet may be queued + * too early and the + * transaction translator will + * return a NAK. Ignore + * this message and retry the + * complete split instead. + */ + DPRINTF("Retrying complete split\n"); + goto receive_pkt; + } goto complete; } td->did_nak = 1;
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