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authorAlan Stern <stern@rowland.harvard.edu>2008-03-03 15:15:59 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-24 21:16:32 -0700
commitfeccc30d90155bcbc937f87643182a43d25873eb (patch)
tree96394e24075a885f1a8bb3e53203f8397e78ea46 /drivers/usb/core/quirks.c
parent5e6effaed6da94e727cd45f945ad2489af8570b3 (diff)
USB: remove CONFIG_USB_PERSIST setting
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>
Diffstat (limited to 'drivers/usb/core/quirks.c')
-rw-r--r--drivers/usb/core/quirks.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index dfc5418ea10..f384edf35b4 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -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 */
}