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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@mediatek.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2018-09-20 19:13:32 +03:00 committed by Greg Kroah-Hartman
parent 7aae9990de
commit 87173acc0d
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/host/xhci-mtk-sch.c
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@ -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)