diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/ehci-q.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 853e5e6396a5..776a97f33914 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -198,7 +198,8 @@ static int qtd_copy_status ( /* if async CSPLIT failed, try cleaning out the TT buffer */ if (status != -EPIPE - && urb->dev->tt && !usb_pipeint (urb->pipe) + && urb->dev->tt + && !usb_pipeint(urb->pipe) && ((token & QTD_STS_MMF) != 0 || QTD_CERR(token) == 0) && (!ehci_is_TDI(ehci) @@ -211,6 +212,9 @@ static int qtd_copy_status ( urb->dev->ttport, urb->dev->devnum, usb_pipeendpoint (urb->pipe), token); #endif /* DEBUG */ + /* REVISIT ARC-derived cores don't clear the root + * hub TT buffer in this way... + */ usb_hub_tt_clear_buffer (urb->dev, urb->pipe); } } @@ -638,6 +642,7 @@ qh_make ( u32 info1 = 0, info2 = 0; int is_input, type; int maxp = 0; + struct usb_tt *tt = urb->dev->tt; if (!qh) return qh; @@ -661,8 +666,9 @@ qh_make ( * For control/bulk requests, the HC or TT handles these. */ if (type == PIPE_INTERRUPT) { - qh->usecs = NS_TO_US (usb_calc_bus_time (USB_SPEED_HIGH, is_input, 0, - hb_mult (maxp) * max_packet (maxp))); + qh->usecs = NS_TO_US(usb_calc_bus_time(USB_SPEED_HIGH, + is_input, 0, + hb_mult(maxp) * max_packet(maxp))); qh->start = NO_FRAME; if (urb->dev->speed == USB_SPEED_HIGH) { @@ -680,7 +686,6 @@ qh_make ( goto done; } } else { - struct usb_tt *tt = urb->dev->tt; int think_time; /* gap is f(FS/LS transfer times) */ @@ -736,10 +741,8 @@ qh_make ( /* set the address of the TT; for TDI's integrated * root hub tt, leave it zeroed. */ - if (!ehci_is_TDI(ehci) - || urb->dev->tt->hub != - ehci_to_hcd(ehci)->self.root_hub) - info2 |= urb->dev->tt->hub->devnum << 16; + if (tt && tt->hub != ehci_to_hcd(ehci)->self.root_hub) + info2 |= tt->hub->devnum << 16; /* NOTE: if (PIPE_INTERRUPT) { scheduler sets c-mask } */ |