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USB: EHCI: remove ehci_port_power() routine

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This patch (as1623) removes the ehci_port_power() routine and all the
places that call it.  There's no reason for ehci-hcd to change the
port power settings; the hub driver takes care of all that stuff.

There is one exception: When the controller is resumed from
hibernation or following a loss of power, the ports that are supposed
to be handed over to a companion controller must be powered on first.
Otherwise the handover won't work.  This process is not visible to the
hub driver, so it has to be handled in ehci-hcd.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern
2012-10-31 13:21:06 -04:00
committed by Greg Kroah-Hartman
parent 4968f95191
commit c73cee717e
21 changed files with 21 additions and 129 deletions
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3
drivers/usb/host/ehci-omap.c
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@@ -146,9 +146,6 @@ static int omap_ehci_init(struct usb_hcd *hcd)
gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1);
}
/* root ports should always stay powered */
ehci_port_power(ehci, 1);
return rc;
}