]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
usb: core: hub: Disable autosuspend for Cypress CY7C65632
authorAndrew Lunn <andrew@lunn.ch>
Mon, 14 Jun 2021 15:55:23 +0000 (17:55 +0200)
committerSasha Levin <sashal@kernel.org>
Wed, 30 Jun 2021 12:48:22 +0000 (08:48 -0400)
commitf0a3391d574aff42c3107f1c570543b2c6adc32a
tree60b9d94bc2e435d4470c9694b2826584f835c538
parenta115198caaab6d663bef75823a3c5f0802306d60
usb: core: hub: Disable autosuspend for Cypress CY7C65632

commit a7d8d1c7a7f73e780aa9ae74926ae5985b2f895f upstream.

The Cypress CY7C65632 appears to have an issue with auto suspend and
detecting devices, not too dissimilar to the SMSC 5534B hub. It is
easiest to reproduce by connecting multiple mass storage devices to
the hub at the same time. On a Lenovo Yoga, around 1 in 3 attempts
result in the devices not being detected. It is however possible to
make them appear using lsusb -v.

Disabling autosuspend for this hub resolves the issue.

Fixes: 1208f9e1d758 ("USB: hub: Fix the broken detection of USB3 device in SMSC hub")
Cc: stable@vger.kernel.org
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210614155524.2228800-1-andrew@lunn.ch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/hub.c