This is a note to let you know that I've just added the patch titled
usb: core: hub: disable autosuspend for TI TUSB8041
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-core-hub-disable-autosuspend-for-ti-tusb8041.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7171b0e261b17de96490adf053b8bb4b00061bcf Mon Sep 17 00:00:00 2001
From: Flavio Suligoi <f.suligoi@xxxxxxx>
Date: Mon, 19 Dec 2022 13:47:59 +0100
Subject: usb: core: hub: disable autosuspend for TI TUSB8041
From: Flavio Suligoi <f.suligoi@xxxxxxx>
commit 7171b0e261b17de96490adf053b8bb4b00061bcf upstream.
The Texas Instruments TUSB8041 has an autosuspend problem at high
temperature.
If there is not USB traffic, after a couple of ms, the device enters in
autosuspend mode. In this condition the external clock stops working, to
save energy. When the USB activity turns on, ther hub exits the
autosuspend state, the clock starts running again and all works fine.
At ambient temperature all works correctly, but at high temperature,
when the USB activity turns on, the external clock doesn't restart and
the hub disappears from the USB bus.
Disabling the autosuspend mode for this hub solves the issue.
Signed-off-by: Flavio Suligoi <f.suligoi@xxxxxxx>
Cc: stable <stable@xxxxxxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221219124759.3207032-1-f.suligoi@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/core/hub.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -44,6 +44,9 @@
#define USB_PRODUCT_USB5534B 0x5534
#define USB_VENDOR_CYPRESS 0x04b4
#define USB_PRODUCT_CY7C65632 0x6570
+#define USB_VENDOR_TEXAS_INSTRUMENTS 0x0451
+#define USB_PRODUCT_TUSB8041_USB3 0x8140
+#define USB_PRODUCT_TUSB8041_USB2 0x8142
#define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01
#define HUB_QUIRK_DISABLE_AUTOSUSPEND 0x02
@@ -5798,6 +5801,16 @@ static const struct usb_device_id hub_id
.idVendor = USB_VENDOR_GENESYS_LOGIC,
.bInterfaceClass = USB_CLASS_HUB,
.driver_info = HUB_QUIRK_CHECK_PORT_AUTOSUSPEND},
+ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+ | USB_DEVICE_ID_MATCH_PRODUCT,
+ .idVendor = USB_VENDOR_TEXAS_INSTRUMENTS,
+ .idProduct = USB_PRODUCT_TUSB8041_USB2,
+ .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
+ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+ | USB_DEVICE_ID_MATCH_PRODUCT,
+ .idVendor = USB_VENDOR_TEXAS_INSTRUMENTS,
+ .idProduct = USB_PRODUCT_TUSB8041_USB3,
+ .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
{ .match_flags = USB_DEVICE_ID_MATCH_DEV_CLASS,
.bDeviceClass = USB_CLASS_HUB},
{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
Patches currently in stable-queue which might be from f.suligoi@xxxxxxx are
queue-6.1/usb-core-hub-disable-autosuspend-for-ti-tusb8041.patch
