diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-sched.c | 47 |
2 files changed, 12 insertions, 44 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 3a42bcd27d30..d97b16b52efa 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -29,15 +29,6 @@ config USB_EHCI_HCD To compile this driver as a module, choose M here: the module will be called ehci-hcd. -config USB_EHCI_SPLIT_ISO - bool "Full speed ISO transactions (EXPERIMENTAL)" - depends on USB_EHCI_HCD && EXPERIMENTAL - default n - ---help--- - This code is new and hasn't been used with many different - EHCI or USB 2.0 transaction translator implementations. - It should work for ISO-OUT transfers, like audio. - config USB_EHCI_ROOT_HUB_TT bool "Root Hub Transaction Translators (EXPERIMENTAL)" depends on USB_EHCI_HCD && EXPERIMENTAL diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index 1a94e6cec419..001b2c389be2 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1630,16 +1630,12 @@ itd_complete ( BUG_ON (itd->urb == urb); */ - /* give urb back to the driver ... can be out-of-order */ + /* give urb back to the driver; completion often (re)submits */ dev = urb->dev; ehci_urb_done(ehci, urb, 0); retval = true; urb = NULL; - - /* defer stopping schedule; completion can submit */ ehci->periodic_sched--; - if (unlikely (!ehci->periodic_sched)) - (void) disable_periodic (ehci); ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; if (unlikely (list_empty (&stream->td_list))) { @@ -1725,8 +1721,6 @@ done: return status; } -#ifdef CONFIG_USB_EHCI_SPLIT_ISO - /*-------------------------------------------------------------------------*/ /* @@ -2016,16 +2010,12 @@ sitd_complete ( BUG_ON (sitd->urb == urb); */ - /* give urb back to the driver */ + /* give urb back to the driver; completion often (re)submits */ dev = urb->dev; ehci_urb_done(ehci, urb, 0); retval = true; urb = NULL; - - /* defer stopping schedule; completion can submit */ ehci->periodic_sched--; - if (!ehci->periodic_sched) - (void) disable_periodic (ehci); ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; if (list_empty (&stream->td_list)) { @@ -2108,26 +2098,6 @@ done: return status; } -#else - -static inline int -sitd_submit (struct ehci_hcd *ehci, struct urb *urb, gfp_t mem_flags) -{ - ehci_dbg (ehci, "split iso support is disabled\n"); - return -ENOSYS; -} - -static inline unsigned -sitd_complete ( - struct ehci_hcd *ehci, - struct ehci_sitd *sitd -) { - ehci_err (ehci, "sitd_complete %p?\n", sitd); - return 0; -} - -#endif /* USB_EHCI_SPLIT_ISO */ - /*-------------------------------------------------------------------------*/ static void @@ -2252,8 +2222,14 @@ restart: } /* assume completion callbacks modify the queue */ - if (unlikely (modified)) - goto restart; + if (unlikely (modified)) { + if (likely(ehci->periodic_sched > 0)) + goto restart; + /* maybe we can short-circuit this scan! */ + disable_periodic(ehci); + now_uframe = clock; + break; + } } /* stop when we catch up to the HC */ @@ -2269,7 +2245,8 @@ restart: if (now_uframe == clock) { unsigned now; - if (!HC_IS_RUNNING (ehci_to_hcd(ehci)->state)) + if (!HC_IS_RUNNING (ehci_to_hcd(ehci)->state) + || ehci->periodic_sched == 0) break; ehci->next_uframe = now_uframe; now = ehci_readl(ehci, &ehci->regs->frame_index) % mod; |
