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USB: remove CONFIG_USB_PERSIST setting

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This patch (as1047) removes the USB_PERSIST Kconfig option, enabling
it permanently.  It also prevents the power/persist attribute from
being created for hub devices; there's no point in having it since
USB-PERSIST is always turned on for hubs.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2008-03-03 15:15:59 -05:00
committed by Greg Kroah-Hartman
parent 5e6effaed6
commit feccc30d90
7 changed files with 53 additions and 81 deletions
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12
drivers/usb/core/quirks.c
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@@ -97,4 +97,16 @@ void usb_detect_quirks(struct usb_device *udev)
if (udev->descriptor.bDeviceClass != USB_CLASS_HUB)
udev->autosuspend_disabled = 1;
#endif
#ifdef CONFIG_PM
/* Hubs are automatically enabled for USB-PERSIST */
if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
udev->persist_enabled = 1;
#else
/* In the absense of PM, we can safely enable USB-PERSIST
* for all devices. It will affect things like hub resets
* and EMF-related port disables.
*/
udev->persist_enabled = 1;
#endif /* CONFIG_PM */
}