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From 8276db72581e4d1e3f89ccce84555c9fea145e16 Mon Sep 17 00:00:00 2001
From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Date: Fri, 11 Aug 2017 17:30:40 +0300
Subject: [PATCH] usb: hub: disable autosuspend for SMSC hubs
Disable autosuspend for SMSC hubs (USB5534B/USB2134B devices)
This is a workaround for RCar Gen3 XHCI
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
---
drivers/usb/core/hub.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index cbb1467..2c4c006 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -34,7 +34,9 @@
#include "otg_whitelist.h"
#define USB_VENDOR_GENESYS_LOGIC 0x05e3
+#define USB_VENDOR_SMSC 0x0424
#define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01
+#define HUB_QUIRK_DISABLE_AUTOSUSPEND 0x02
/* Protect struct usb_device->state and ->children members
* Note: Both are also protected by ->dev.sem, except that ->state can
@@ -1845,6 +1847,9 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
if (id->driver_info & HUB_QUIRK_CHECK_PORT_AUTOSUSPEND)
hub->quirk_check_port_auto_suspend = 1;
+ if (id->driver_info & HUB_QUIRK_DISABLE_AUTOSUSPEND)
+ pm_runtime_set_autosuspend_delay(&hdev->dev, -1);
+
if (hub_configure(hub, endpoint) >= 0)
return 0;
@@ -5226,6 +5231,10 @@ static void hub_event(struct work_struct *work)
}
static const struct usb_device_id hub_id_table[] = {
+ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_INT_CLASS,
+ .idVendor = USB_VENDOR_SMSC,
+ .bInterfaceClass = USB_CLASS_HUB,
+ .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
{ .match_flags = USB_DEVICE_ID_MATCH_VENDOR
| USB_DEVICE_ID_MATCH_INT_CLASS,
.idVendor = USB_VENDOR_GENESYS_LOGIC,
--
1.9.1
|
