kernel/ARM-tegra-usb-no-reset.patch
Josh Boyer cf23086f03 Linux v3.17-rc5-13-g2324067fa9a4
- Reenable debugging options.
2014-09-16 09:07:16 -04:00

33 lines
1.0 KiB
Diff

From 522c5e30395af75639baaaf105bbafe84c47e2fb Mon Sep 17 00:00:00 2001
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 d481c99a20d7..6050143ce7ec 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -5036,6 +5036,13 @@ static void hub_events(void)
(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);
--
1.9.3