diff options
| author | Jan-Marek Glogowski <glogow@fbihome.de> | 2019-02-01 13:52:31 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-06 12:09:12 +0100 |
| commit | fcc987e8792aba817060133a1ab867574749bacb (patch) | |
| tree | 4b6334d86ce1d9194ae2fdcd506df566e11ba032 /init | |
| parent | b3ffb896a35600f2f67559ad61bc97faaca84b21 (diff) | |
usb: handle warm-reset port requests on hub resume
[ Upstream commit 4fdc1790e6a9ef22399c6bc6e63b80f4609f3b7e ]
On plug-in of my USB-C device, its USB_SS_PORT_LS_SS_INACTIVE
link state bit is set. Greping all the kernel for this bit shows
that the port status requests a warm-reset this way.
This just happens, if its the only device on the root hub, the hub
therefore resumes and the HCDs status_urb isn't yet available.
If a warm-reset request is detected, this sets the hubs event_bits,
which will prevent any auto-suspend and allows the hubs workqueue
to warm-reset the port later in port_event.
Signed-off-by: Jan-Marek Glogowski <glogow@fbihome.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions