This is a note to let you know that I've just added the patch titled
usb: mtu3: fix failed runtime suspend in host only mode
to the 5.15-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-mtu3-fix-failed-runtime-suspend-in-host-only-mod.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d57de08e5b7ab1bdd54a6844f754b292b87b2237
Author: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
Date: Thu Sep 29 14:44:59 2022 +0800
usb: mtu3: fix failed runtime suspend in host only mode
[ Upstream commit 1c703e29da5efac6180e4c189029fa34b7e48e97 ]
When the dr_mode is "host", after the host enter runtime suspend,
the mtu3 can't do it, because the mtu3's device wakeup function is
not enabled, instead it's enabled in gadget init function, to fix
the issue, init wakeup early in mtu3's probe()
Fixes: 6b587394c65c ("usb: mtu3: support suspend/resume for dual-role mode")
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Reported-by: Tianping Fang <tianping.fang@xxxxxxxxxxxx>
Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220929064459.32522-1-chunfeng.yun@xxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c
index c4a2c37abf62..3ea5145a842b 100644
--- a/drivers/usb/mtu3/mtu3_core.c
+++ b/drivers/usb/mtu3/mtu3_core.c
@@ -971,8 +971,6 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb)
goto irq_err;
}
- device_init_wakeup(dev, true);
-
/* power down device IP for power saving by default */
mtu3_stop(mtu);
diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c
index f13531022f4a..4c4dcbf17518 100644
--- a/drivers/usb/mtu3/mtu3_plat.c
+++ b/drivers/usb/mtu3/mtu3_plat.c
@@ -332,6 +332,8 @@ static int mtu3_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
+ device_init_wakeup(dev, true);
+
ret = ssusb_rscs_init(ssusb);
if (ret)
goto comm_init_err;
