* [PATCH] usb: xhci-mtk: fix the failure of bandwidth allocation
@ 2020-07-10 2:29 Chunfeng Yun
2020-07-10 3:14 ` Nicolas Boichat
0 siblings, 1 reply; 3+ messages in thread
From: Chunfeng Yun @ 2020-07-10 2:29 UTC (permalink / raw)
To: Mathias Nyman
Cc: Greg Kroah-Hartman, linux-usb, linux-kernel, stable,
Chunfeng Yun, linux-mediatek, Matthias Brugger, linux-arm-kernel
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(+)
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
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] usb: xhci-mtk: fix the failure of bandwidth allocation
2020-07-10 2:29 [PATCH] usb: xhci-mtk: fix the failure of bandwidth allocation Chunfeng Yun
@ 2020-07-10 3:14 ` Nicolas Boichat
2020-07-10 5:58 ` Chunfeng Yun
0 siblings, 1 reply; 3+ messages in thread
From: Nicolas Boichat @ 2020-07-10 3:14 UTC (permalink / raw)
To: Chunfeng Yun
Cc: Mathias Nyman, Greg Kroah-Hartman, linux-usb, lkml, stable,
moderated list:ARM/Mediatek SoC support, Matthias Brugger,
Ikjoon Jang, linux-arm Mailing List
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
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] usb: xhci-mtk: fix the failure of bandwidth allocation
2020-07-10 3:14 ` Nicolas Boichat
@ 2020-07-10 5:58 ` Chunfeng Yun
0 siblings, 0 replies; 3+ messages in thread
From: Chunfeng Yun @ 2020-07-10 5:58 UTC (permalink / raw)
To: Nicolas Boichat
Cc: Mathias Nyman, Greg Kroah-Hartman, linux-usb, lkml, stable,
moderated list:ARM/Mediatek SoC support, Matthias Brugger,
Ikjoon Jang, linux-arm Mailing List
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
_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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2020-07-10 2:29 [PATCH] usb: xhci-mtk: fix the failure of bandwidth allocation Chunfeng Yun
2020-07-10 3:14 ` Nicolas Boichat
2020-07-10 5:58 ` Chunfeng Yun
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