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usb: xhci-mtk: fix ISOC error when interval is zero

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[ Upstream commit 87173acc0d ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chunfeng Yun
2018-09-20 19:13:32 +03:00
committed by Chris
parent d1b19d58c4
commit ec49db301e
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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@@ -122,7 +122,9 @@ 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)