USB: ohci: make distrust_firmware a quirk

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/host/ohci-hcd.c

@@ -483,6 +483,9 @@ static int ohci_init (struct ohci_hcd *ohci)
 	int ret;
 	struct usb_hcd *hcd = ohci_to_hcd(ohci);
 
+	if (distrust_firmware)
+		ohci->flags |= OHCI_QUIRK_HUB_POWER;
+
 	disable (ohci);
 	ohci->regs = hcd->regs;
 
@@ -689,7 +692,8 @@ static int ohci_run (struct ohci_hcd *ohci)
 		temp |= RH_A_NOCP;
 		temp &= ~(RH_A_POTPGT | RH_A_NPS);
 		ohci_writel (ohci, temp, &ohci->regs->roothub.a);
-	} else if ((ohci->flags & OHCI_QUIRK_AMD756) || distrust_firmware) {
+	} else if ((ohci->flags & OHCI_QUIRK_AMD756) ||
+			(ohci->flags & OHCI_QUIRK_HUB_POWER)) {
 		/* hub power always on; required for AMD-756 and some
 		 * Mac platforms.  ganged overcurrent reporting, if any.
 		 */

drivers/usb/host/ohci-omap.c

@@ -260,7 +260,7 @@ static int ohci_omap_init(struct usb_hcd *hcd)
 			omap_cfg_reg(W4_USB_HIGHZ);
 		}
 		ohci_writel(ohci, rh, &ohci->regs->roothub.a);
-		distrust_firmware = 0;
+		ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
 	} else if (machine_is_nokia770()) {
 		/* We require a self-powered hub, which should have
 		 * plenty of power. */

drivers/usb/host/ohci.h

@@ -399,6 +399,7 @@ struct ohci_hcd {
 #define	OHCI_QUIRK_ZFMICRO	0x20			/* Compaq ZFMicro chipset*/
 #define	OHCI_QUIRK_NEC		0x40			/* lost interrupts */
 #define	OHCI_QUIRK_FRAME_NO	0x80			/* no big endian frame_no shift */
+#define	OHCI_QUIRK_HUB_POWER	0x100			/* distrust firmware power/oc setup */
 	// there are also chip quirks/bugs in init logic
 
 	struct work_struct	nec_work;	/* Worker for NEC quirk */