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Date: Wed, 29 Aug 2018 10:55:15 +0800 From: Chunfeng Yun <chunfeng.yun@...iatek.com> To: Mathias Nyman <mathias.nyman@...el.com> CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Felipe Balbi <felipe.balbi@...ux.intel.com>, Matthias Brugger <matthias.bgg@...il.com>, Alan Stern <stern@...land.harvard.edu>, Chunfeng Yun <chunfeng.yun@...iatek.com>, <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org> Subject: [PATCH 3/6] usb: xhci-mtk: fix ISOC error when interval is zero If the interval equal zero, needn't round up to power of two for the number of packets in each ESIT, so fix it. Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com> --- drivers/usb/host/xhci-mtk-sch.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c index 46fe0a2..057f453 100644 --- a/drivers/usb/host/xhci-mtk-sch.c +++ b/drivers/usb/host/xhci-mtk-sch.c @@ -126,7 +126,9 @@ static void setup_sch_info(struct usb_device *udev, } if (ep_type == ISOC_IN_EP || ep_type == ISOC_OUT_EP) { - if (esit_pkts <= sch_ep->esit) + if (sch_ep->esit == 1) + sch_ep->pkts = esit_pkts; + else if (esit_pkts <= sch_ep->esit) sch_ep->pkts = 1; else sch_ep->pkts = roundup_pow_of_two(esit_pkts) -- 1.9.1
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