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| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2021-08-20 14:59:12 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-26 13:34:05 +0200 |
| commit | 76d55a633ab61e70cb56720830e7be3dec0842fe (patch) | |
| tree | 9fde034cda46c480aaf41863a23294fd8574bfe1 /drivers/usb/host/xhci-mtk-sch.c | |
| parent | de940244e8987a76d73fb2b0057ecd494cbfeefd (diff) | |
| download | linux-76d55a633ab61e70cb56720830e7be3dec0842fe.tar.bz2 | |
Revert "usb: xhci-mtk: relax TT periodic bandwidth allocation"
As discussed in following patch:
https://patchwork.kernel.org/patch/12420339
No need calculate number of uframes again, but should use value
form check_sch_tt(), if we plan to remove extra CS, also can do
it in check_sch_tt(). So revert this patch, and prepare to send
new patch for it.
This reverts commit 548011957d1d72e0b662300c8b32b81d593b796e.
Cc: Ikjoon Jang <ikjn@chromium.org>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20210820065913.64490-1-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-mtk-sch.c')
| -rw-r--r-- | drivers/usb/host/xhci-mtk-sch.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c index 46cbf5d54f4f..f9b4d27ce449 100644 --- a/drivers/usb/host/xhci-mtk-sch.c +++ b/drivers/usb/host/xhci-mtk-sch.c @@ -459,17 +459,16 @@ static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset) u32 num_esit, tmp; int base; int i, j; - u8 uframes = DIV_ROUND_UP(sch_ep->maxpkt, FS_PAYLOAD_MAX); num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit; - - if (sch_ep->ep_type == INT_IN_EP || sch_ep->ep_type == ISOC_IN_EP) - offset++; - for (i = 0; i < num_esit; i++) { base = offset + i * sch_ep->esit; - for (j = 0; j < uframes; j++) { + /* + * Compared with hs bus, no matter what ep type, + * the hub will always delay one uframe to send data + */ + for (j = 0; j < sch_ep->cs_count; j++) { tmp = tt->fs_bus_bw[base + j] + sch_ep->bw_cost_per_microframe; if (tmp > FS_PAYLOAD_MAX) return -ESCH_BW_OVERFLOW; @@ -547,8 +546,6 @@ static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used) u32 base, num_esit; int bw_updated; int i, j; - int offset = sch_ep->offset; - u8 uframes = DIV_ROUND_UP(sch_ep->maxpkt, FS_PAYLOAD_MAX); num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit; @@ -557,13 +554,10 @@ static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used) else bw_updated = -sch_ep->bw_cost_per_microframe; - if (sch_ep->ep_type == INT_IN_EP || sch_ep->ep_type == ISOC_IN_EP) - offset++; - for (i = 0; i < num_esit; i++) { - base = offset + i * sch_ep->esit; + base = sch_ep->offset + i * sch_ep->esit; - for (j = 0; j < uframes; j++) + for (j = 0; j < sch_ep->cs_count; j++) tt->fs_bus_bw[base + j] += bw_updated; } |