| Message ID | 1594348182-431-1-git-send-email-chunfeng.yun@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | usb: xhci-mtk: fix the failure of bandwidth allocation | expand |
On Fri, Jul 10, 2020 at 10:30 AM Chunfeng Yun <chunfeng.yun@mediatek.com> wrote: > > The wMaxPacketSize field of endpoint descriptor may be zero > as default value in alternate interface, and they are not > actually selected when start stream, so skip them when try to > allocate bandwidth. > > Cc: stable <stable@vger.kernel.org> > Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Add this? Fixes: 0cbd4b34cda9dfd ("xhci: mediatek: support MTK xHCI host controller") > --- > drivers/usb/host/xhci-mtk-sch.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c > index fea5555..45c54d56 100644 > --- a/drivers/usb/host/xhci-mtk-sch.c > +++ b/drivers/usb/host/xhci-mtk-sch.c > @@ -557,6 +557,10 @@ static bool need_bw_sch(struct usb_host_endpoint *ep, > if (is_fs_or_ls(speed) && !has_tt) > return false; > > + /* skip endpoint with zero maxpkt */ > + if (usb_endpoint_maxp(&ep->desc) == 0) > + return false; > + > return true; > } > > -- > 1.9.1 > _______________________________________________ > Linux-mediatek mailing list > Linux-mediatek@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-mediatek
On Fri, 2020-07-10 at 11:14 +0800, Nicolas Boichat wrote: > On Fri, Jul 10, 2020 at 10:30 AM Chunfeng Yun <chunfeng.yun@mediatek.com> wrote: > > > > The wMaxPacketSize field of endpoint descriptor may be zero > > as default value in alternate interface, and they are not > > actually selected when start stream, so skip them when try to > > allocate bandwidth. > > > > Cc: stable <stable@vger.kernel.org> > > Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> > > Add this? > Fixes: 0cbd4b34cda9dfd ("xhci: mediatek: support MTK xHCI host controller") Ok, thanks > > > --- > > drivers/usb/host/xhci-mtk-sch.c | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c > > index fea5555..45c54d56 100644 > > --- a/drivers/usb/host/xhci-mtk-sch.c > > +++ b/drivers/usb/host/xhci-mtk-sch.c > > @@ -557,6 +557,10 @@ static bool need_bw_sch(struct usb_host_endpoint *ep, > > if (is_fs_or_ls(speed) && !has_tt) > > return false; > > > > + /* skip endpoint with zero maxpkt */ > > + if (usb_endpoint_maxp(&ep->desc) == 0) > > + return false; > > + > > return true; > > } > > > > -- > > 1.9.1 > > _______________________________________________ > > Linux-mediatek mailing list > > Linux-mediatek@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/linux-mediatek
diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c index fea5555..45c54d56 100644 --- a/drivers/usb/host/xhci-mtk-sch.c +++ b/drivers/usb/host/xhci-mtk-sch.c @@ -557,6 +557,10 @@ static bool need_bw_sch(struct usb_host_endpoint *ep, if (is_fs_or_ls(speed) && !has_tt) return false; + /* skip endpoint with zero maxpkt */ + if (usb_endpoint_maxp(&ep->desc) == 0) + return false; + return true; }
The wMaxPacketSize field of endpoint descriptor may be zero as default value in alternate interface, and they are not actually selected when start stream, so skip them when try to allocate bandwidth. Cc: stable <stable@vger.kernel.org> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> --- drivers/usb/host/xhci-mtk-sch.c | 4 ++++ 1 file changed, 4 insertions(+)