diff options
| author |   Matthieu CASTET <castet.matthieu@free.fr> | 2011-07-02 19:47:33 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2011-09-26 15:48:41 -0700 |
| commit | 2093c6b49c8f1dc581d8953aca71297d4cace55e (patch) | |
| tree | fef0517cff188ceab2e7fe4386999f6702670fcf /drivers/usb/host | |
| parent | usbmon vs. tcpdump: fix dropped packet count (diff) | |
| download | linux-dev-2093c6b49c8f1dc581d8953aca71297d4cace55e.tar.xz linux-dev-2093c6b49c8f1dc581d8953aca71297d4cace55e.zip | |
EHCI : introduce a common ehci_setup
This allow to clean duplicated code in most of SOC driver.
Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org> # fixes 3.1 build error
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 2f0cf863b379..05abbcd93cf4 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -768,6 +768,35 @@ static int ehci_run (struct usb_hcd *hcd) return 0; } +static int __maybe_unused ehci_setup (struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int retval; + + ehci->regs = (void __iomem *)ehci->caps + + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); + dbg_hcs_params(ehci, "reset"); + dbg_hcc_params(ehci, "reset"); + + /* cache this readonly data; minimize chip reads */ + ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + + ehci->sbrn = HCD_USB2; + + retval = ehci_halt(ehci); + if (retval) + return retval; + + /* data structure init */ + retval = ehci_init(hcd); + if (retval) + return retval; + + ehci_reset(ehci); + + return 0; +} + /*-------------------------------------------------------------------------*/ static irqreturn_t ehci_irq (struct usb_hcd *hcd) |