kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-16 22:39:48 +00:00
Code Issues Releases Packages Activity

xhci: Limit USB2 port wake support for AMD Promontory hosts

Browse source 
commit dec08194ff upstream.

For AMD Promontory xHCI host, although you can disable USB 2.0 ports in
BIOS settings, those ports will be enabled anyway after you remove a
device on that port and re-plug it in again. It's a known limitation of
the chip. As a workaround we can clear the PORT_WAKE_BITS.

This will disable wake on connect, disconnect and overcurrent on
AMD Promontory USB2 ports

[checkpatch cleanup and commit message reword -Mathias]
Cc: Tsai Nicholas <nicholas.tsai@amd.com>
Signed-off-by: Jiahau Chang <Lars_Chang@asmedia.com.tw>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiahau Chang 2017-06-19 13:08:30 +03:00 • committed by Greg Kroah-Hartman
commit f59d04e342
3 changed files with 16 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files