diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2012-10-10 15:07:39 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-24 14:45:17 -0700 |
| commit | acc08503406f97ce6582c92fd8c8139f1e871a96 (patch) | |
| tree | 29fff5e0ba8e5bd14c96864ea5475ab6c957c5b4 /drivers/usb/host/ehci-sched.c | |
| parent | d6064aca824b81fbb788fd230c88976d84b651b1 (diff) | |
USB: EHCI: make ehci_read_frame_index platform independent
In preparation for splitting the ehci-hcd driver into a core library
and separate platform-specific driver modules, this patch (as1617)
changes the way ehci_read_frame_index() is handled.
Since the same core library will have to work with both PCI and
non-PCI platforms, the quirk handler routine will be compiled
unconditionally. The decision about whether to call it or simply to
read the frame index register is made at run time, based on whether
the frame_index_bug quirk flag is set.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci-sched.c')
| -rw-r--r-- | drivers/usb/host/ehci-sched.c | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index b538a4d62d5..2e14714b359 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -36,29 +36,6 @@ static int ehci_get_frame (struct usb_hcd *hcd); -#ifdef CONFIG_PCI - -static unsigned ehci_read_frame_index(struct ehci_hcd *ehci) -{ - unsigned uf; - - /* - * The MosChip MCS9990 controller updates its microframe counter - * a little before the frame counter, and occasionally we will read - * the invalid intermediate value. Avoid problems by checking the - * microframe number (the low-order 3 bits); if they are 0 then - * re-read the register to get the correct value. - */ - uf = ehci_readl(ehci, &ehci->regs->frame_index); - if (unlikely(ehci->frame_index_bug && ((uf & 7) == 0))) - uf = ehci_readl(ehci, &ehci->regs->frame_index); - return uf; -} - -#endif - -/*-------------------------------------------------------------------------*/ - /* * periodic_next_shadow - return "next" pointer on shadow list * @periodic: host pointer to qh/itd/sitd |