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usb: xhci-mtk: use first-fit for LS/FS

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Use first-fit instead of best-fit for LS/FS devices under TT,
we found that best-fit will consume more bandwidth for some
cases.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20210507021127.54717-4-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2021-05-07 10:11:27 +08:00 committed by Greg Kroah-Hartman
parent bb8d7ef68e
commit 4676be28a4
1 changed files with 5 additions and 0 deletions
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5
drivers/usb/host/xhci-mtk-sch.c
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@ -634,6 +634,11 @@ static int check_sch_bw(struct mu3h_sch_bw_info *sch_bw,
min_bw = worst_bw;
min_index = offset;
}
/* use first-fit for LS/FS */
if (sch_ep->sch_tt && min_index >= 0)
break;
if (min_bw == 0)
break;
}