From f05c07d846b5b815709cd741a85e922ddb72b958 Mon Sep 17 00:00:00 2001 From: Vladimir Barinov Date: Fri, 11 Aug 2017 17:30:40 +0300 Subject: [PATCH] usb: hub: disable autosuspend for SMSC and TI hubs Disable autosuspend for SMSC hubs (USB5534B/USB2134B devices) and TI hub (TUSB8041) This is a workaround for RCar Gen3 XHCI on VB and VB2 Signed-off-by: Vladimir Barinov Signed-off-by: Andrey Gusakov --- drivers/usb/core/hub.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index cbb1467..6f5575f 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -34,7 +34,10 @@ #include "otg_whitelist.h" #define USB_VENDOR_GENESYS_LOGIC 0x05e3 +#define USB_VENDOR_SMSC 0x0424 +#define USB_VENDOR_TI 0x0451 #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 +1848,9 @@ 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 +5232,14 @@ 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_TI, + .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