From: Peter Robinson <pbrobinson@gmail.com>
Date: Thu, 3 May 2012 19:27:11 +0000 (+0100)
Subject: ARM: tegra: usb no reset
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=ba84078a3d92eb79d41ee3e9ca107c86430d0b8a;p=people%2Fjulieng%2Flinux-arm.git

ARM: tegra: usb no reset

Patch for disconnect issues with storage attached to a
 tegra-ehci controller
---

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 73dfa194160b..29c23e5eb867 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);