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

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

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>

authored by

Chunfeng Yun and committed by

Greg Kroah-Hartman 7 years ago 87173acc 7aae9990

+3 -1

1 changed file

expand all

drivers

usb

host

xhci-mtk-sch.c

+3 -1

drivers/usb/host/xhci-mtk-sch.c

··· 126 126 } 127 127 128 128 if (ep_type == ISOC_IN_EP || ep_type == ISOC_OUT_EP) { 129 - if (esit_pkts <= sch_ep->esit) 129 + if (sch_ep->esit == 1) 130 + sch_ep->pkts = esit_pkts; 131 + else if (esit_pkts <= sch_ep->esit) 130 132 sch_ep->pkts = 1; 131 133 else 132 134 sch_ep->pkts = roundup_pow_of_two(esit_pkts)