From: Peter Robinson <pbrobinson@gmail.com>

Date: Thu, 3 May 2012 20:27:11 +0100

Subject: [PATCH] ARM: tegra: usb no reset

Patch for disconnect issues with storage attached to a

 tegra-ehci controller

---

 drivers/usb/core/hub.c | 7 +++++++

 1 file changed, 7 insertions(+)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c

index 43cb2f2e3b43..7f838ec11c81 100644

--- a/drivers/usb/core/hub.c

+++ b/drivers/usb/core/hub.c

@@ -4996,6 +4996,13 @@ static void hub_event(struct work_struct *work)

 			(u16) hub->change_bits[0],

 			(u16) hub->event_bits[0]);

+	/* Don't disconnect USB-SATA on TrimSlice */

+	if (strcmp(dev_name(hdev->bus->controller), "tegra-ehci.0") == 0) {

+		if ((hdev->state == 7) && (hub->change_bits[0] == 0) &&

+				(hub->event_bits[0] == 0x2))

+			hub->event_bits[0] = 0;

+	}

+

 	/* Lock the device, then check to see if we were

 	 * disconnected while waiting for the lock to succeed. */

 	usb_lock_device(hdev);