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author | YueHaibing <yuehaibing@huawei.com> | 2020-09-09 21:44:05 +0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-14 16:50:24 +0200 |
commit | ac9ae510d5d725dc7834028e840e8aa6324a1590 (patch) | |
tree | e2571979ad3b63cb7499531164585da881b6b713 /drivers/usb/host | |
parent | c4005a8f65edc55fb1700dfc5c1c3dc58be80209 (diff) | |
download | linux-stable-ac9ae510d5d725dc7834028e840e8aa6324a1590.tar.gz linux-stable-ac9ae510d5d725dc7834028e840e8aa6324a1590.tar.bz2 linux-stable-ac9ae510d5d725dc7834028e840e8aa6324a1590.zip |
usb: host: ehci-sched: Remove ununsed function tt_start_uframe()
commit b35c5009bbf6 ("USB: EHCI: create per-TT bandwidth tables")
left behind this, remove it.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20200909134405.34036-1-yuehaibing@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
-rw-r--r-- | drivers/usb/host/ehci-sched.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index 847979f265b1..6dfb242f9a4b 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -307,26 +307,6 @@ static int __maybe_unused same_tt(struct usb_device *dev1, #ifdef CONFIG_USB_EHCI_TT_NEWSCHED -/* Which uframe does the low/fullspeed transfer start in? - * - * The parameter is the mask of ssplits in "H-frame" terms - * and this returns the transfer start uframe in "B-frame" terms, - * which allows both to match, e.g. a ssplit in "H-frame" uframe 0 - * will cause a transfer in "B-frame" uframe 0. "B-frames" lag - * "H-frames" by 1 uframe. See the EHCI spec sec 4.5 and figure 4.7. - */ -static inline unsigned char tt_start_uframe(struct ehci_hcd *ehci, __hc32 mask) -{ - unsigned char smask = hc32_to_cpu(ehci, mask) & QH_SMASK; - - if (!smask) { - ehci_err(ehci, "invalid empty smask!\n"); - /* uframe 7 can't have bw so this will indicate failure */ - return 7; - } - return ffs(smask) - 1; -} - static const unsigned char max_tt_usecs[] = { 125, 125, 125, 125, 125, 125, 30, 0 }; |