]> git.proxmox.com Git - mirror_ubuntu-focal-kernel.git/commit
UBUNTU: SAUCE: Revert "usb: core: reduce power-on-good delay time of root hub"
authorChris Chiu <chris.chiu@canonical.com>
Thu, 12 Aug 2021 13:35:12 +0000 (21:35 +0800)
committerStefan Bader <stefan.bader@canonical.com>
Fri, 13 Aug 2021 07:47:08 +0000 (09:47 +0200)
commit52dc2c5a448c5ee91e669522902314f74e8044cc
tree6cc87379781eb2251a8eab2251ed8aa8aaf60c49
parent0da0ae18b34cf7d87135c4a930b85b1cdf1bad64
UBUNTU: SAUCE: Revert "usb: core: reduce power-on-good delay time of root hub"

BugLink: https://bugs.launchpad.net/bugs/1939638
This reverts commit 49b64d3f82f33f9bdd313538795dc00c3f85090c.

The USB devices will fail to be detected if the power-on-good delay
of the root hub is not long enough. In the problematic root hub,
it claims 20 ms of bPwrOn2PwrGood in the hub descriptor, but we
have to increase it to 100ms to make all connected USB devices to
be correctly enumerated and detected. Revert the commit until a
formal fix from upstream.

Signed-off-by: Chris Chiu <chris.chiu@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>
drivers/usb/core/hub.h