diff options
Diffstat (limited to 'drivers/usb/host/ohci-q.c')
| -rw-r--r-- | drivers/usb/host/ohci-q.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c index f36b2fa0ee2f..1974ddc68e45 100644 --- a/drivers/usb/host/ohci-q.c +++ b/drivers/usb/host/ohci-q.c @@ -964,9 +964,9 @@ static void update_done_list(struct ohci_hcd *ohci) /*-------------------------------------------------------------------------*/ /* there are some urbs/eds to unlink; called in_irq(), with HCD locked */ -static void -finish_unlinks (struct ohci_hcd *ohci, u16 tick) +static void finish_unlinks(struct ohci_hcd *ohci) { + unsigned tick = ohci_frame_no(ohci); struct ed *ed, **last; rescan_all: @@ -1202,3 +1202,27 @@ static void process_done_list(struct ohci_hcd *ohci) takeback_td(ohci, td); } } + +/* + * TD takeback and URB giveback must be single-threaded. + * This routine takes care of it all. + */ +static void ohci_work(struct ohci_hcd *ohci) +{ + if (ohci->working) { + ohci->restart_work = 1; + return; + } + ohci->working = 1; + + restart: + process_done_list(ohci); + if (ohci->ed_rm_list) + finish_unlinks(ohci); + + if (ohci->restart_work) { + ohci->restart_work = 0; + goto restart; + } + ohci->working = 0; +} |