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EHCI : introduce a common ehci_setup

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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>
This commit is contained in:
Matthieu CASTET 2011-07-02 19:47:33 +02:00 committed by Greg Kroah-Hartman
parent 236c448cb6
commit 2093c6b49c
1 changed files with 29 additions and 0 deletions
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29
drivers/usb/host/ehci-hcd.c
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@ -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)