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usb: xhci-mtk: add a function to (un)load bandwidth info

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[ Upstream commit 338af695fffb12a9407c376ce0cebce896c15050 ]

Extract a function to load/unload bandwidth info, and remove
a dummy check of TT offset.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/6fbc000756a4a4a7efbce651b785fee7561becb6.1615170625.git.chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 548011957d1d ("usb: xhci-mtk: relax TT periodic bandwidth allocation")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chunfeng Yun 2021-03-08 10:51:55 +08:00 committed by Greg Kroah-Hartman
parent c2e7000b13
commit 402fa9214e
1 changed files with 16 additions and 21 deletions
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37
drivers/usb/host/xhci-mtk-sch.c
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@ -375,7 +375,6 @@ static void update_bus_bw(struct mu3h_sch_bw_info *sch_bw,
sch_ep->bw_budget_table[j];
}
}
sch_ep->allocated = used;
}
static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset)
@ -509,6 +508,19 @@ static void update_sch_tt(struct usb_device *udev,
list_del(&sch_ep->tt_endpoint);
}
static int load_ep_bw(struct usb_device *udev, struct mu3h_sch_bw_info *sch_bw,
struct mu3h_sch_ep_info *sch_ep, bool loaded)
{
if (sch_ep->sch_tt)
update_sch_tt(udev, sch_ep, loaded);
/* update bus bandwidth info */
update_bus_bw(sch_bw, sch_ep, loaded);
sch_ep->allocated = loaded;
return 0;
}
static u32 get_esit_boundary(struct mu3h_sch_ep_info *sch_ep)
{
u32 boundary = sch_ep->esit;
@ -535,7 +547,6 @@ static int check_sch_bw(struct usb_device *udev,
u32 esit_boundary;
u32 min_num_budget;
u32 min_cs_count;
bool tt_offset_ok = false;
int ret;
/*
@ -552,8 +563,6 @@ static int check_sch_bw(struct usb_device *udev,
ret = check_sch_tt(udev, sch_ep, offset);
if (ret)
continue;
else
tt_offset_ok = true;
}
if ((offset + sch_ep->num_budget_microframes) > esit_boundary)
@ -585,29 +594,15 @@ static int check_sch_bw(struct usb_device *udev,
sch_ep->cs_count = min_cs_count;
sch_ep->num_budget_microframes = min_num_budget;
if (sch_ep->sch_tt) {
/* all offset for tt is not ok*/
if (!tt_offset_ok)
return -ERANGE;
update_sch_tt(udev, sch_ep, 1);
}
/* update bus bandwidth info */
update_bus_bw(sch_bw, sch_ep, 1);
return 0;
return load_ep_bw(udev, sch_bw, sch_ep, true);
}
static void destroy_sch_ep(struct usb_device *udev,
struct mu3h_sch_bw_info *sch_bw, struct mu3h_sch_ep_info *sch_ep)
{
/* only release ep bw check passed by check_sch_bw() */
if (sch_ep->allocated) {
update_bus_bw(sch_bw, sch_ep, 0);
if (sch_ep->sch_tt)
update_sch_tt(udev, sch_ep, 0);
}
if (sch_ep->allocated)
load_ep_bw(udev, sch_bw, sch_ep, false);
if (sch_ep->sch_tt)
drop_tt(udev);