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| author | Ikjoon Jang <ikjn@chromium.org> | 2021-01-13 13:05:11 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-26 17:54:04 +0300 |
| commit | 1d69f9d901ef14d81c3b004e3282b8cc7b456280 (patch) | |
| tree | 4b2e86af69021e903bb87ccc269a00dc56d4b837 /drivers/usb/host/xhci-mtk.c | |
| parent | a55a9a4c5c6253f6e4dea268af728664ac997790 (diff) | |
| download | linux-1d69f9d901ef14d81c3b004e3282b8cc7b456280.tar.xz | |
usb: xhci-mtk: fix unreleased bandwidth data
xhci-mtk needs XHCI_MTK_HOST quirk functions in add_endpoint() and
drop_endpoint() to handle its own sw bandwidth management.
It stores bandwidth data into an internal table every time
add_endpoint() is called, and drops those in drop_endpoint().
But when bandwidth allocation fails at one endpoint, all earlier
allocation from the same interface could still remain at the table.
This patch moves bandwidth management codes to check_bandwidth() and
reset_bandwidth() path. To do so, this patch also adds those functions
to xhci_driver_overrides and lets mtk-xhci to release all failed
endpoints in reset_bandwidth() path.
Fixes: 08e469de87a2 ("usb: xhci-mtk: supports bandwidth scheduling with multi-TT")
Signed-off-by: Ikjoon Jang <ikjn@chromium.org>
Link: https://lore.kernel.org/r/20210113180444.v6.1.Id0d31b5f3ddf5e734d2ab11161ac5821921b1e1e@changeid
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-mtk.c')
| -rw-r--r-- | drivers/usb/host/xhci-mtk.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index 8f321f39ab96..fe010cc61f19 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -347,6 +347,8 @@ static void usb_wakeup_set(struct xhci_hcd_mtk *mtk, bool enable) static int xhci_mtk_setup(struct usb_hcd *hcd); static const struct xhci_driver_overrides xhci_mtk_overrides __initconst = { .reset = xhci_mtk_setup, + .check_bandwidth = xhci_mtk_check_bandwidth, + .reset_bandwidth = xhci_mtk_reset_bandwidth, }; static struct hc_driver __read_mostly xhci_mtk_hc_driver; |