musb_hdrc: Fix OPT A error "B-OPT Did not detect reset after connecting"

musb_hdrc: Fix OPT A error "B-OPT Did not detect reset after connecting"

[Tony Lindgren]

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Hi all,

This seems to fix some random OPT failures.

Tony


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From: Tony Lindgren <tony@atomide.com>
Subject: musb_hdrc: Fix OPT A error "B-OPT Did not detect reset after connecting"

Fix OPT A error "B-OPT Did not detect reset after connecting"

hub 1-0:1.0: hub_suspend
usb usb1: suspend fail, err -16
usb usb1: 'global' suspend -16
hub 1-0:1.0: activate --> -108

Signed-off-by: Tony Lindgren <tony@atomide.com>

Index: linux-selene/drivers/usb/musb/musb_core.c
===================================================================
--- linux-selene.orig/drivers/usb/musb/musb_core.c	2007-08-24 05:18:55.000000000 -0700
+++ linux-selene/drivers/usb/musb/musb_core.c	2007-08-24 06:29:37.000000000 -0700
@@ -341,6 +341,14 @@ void musb_hnp_stop(struct musb *musb)
 		DBG(1, "HNP: Stopping in unknown state %s\n",
 			otg_state_string(musb));
 	}
+
+	/*
+	 * When returning to A state after HNP, avoid hub_port_rebounce(),
+	 * which cause occasional OPT A "Did not receive reset after connect"
+	 * errors.
+	 */
+	musb->port1_status &=
+		~(1 << USB_PORT_FEAT_C_CONNECTION);
 }
 
 #endif

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