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authorJiahau Chang <jiahau@gmail.com>2017-06-19 13:08:30 +0300
committerBen Hutchings <ben@decadent.org.uk>2017-10-12 17:27:10 +0300
commit7dcc74d30e836ac96d2b9552c80e6fca03155c35 (patch)
tree000f3aed9c4f1c5010d10d8c887574022b551d46 /drivers/block/brd.c
parentaf64015b4f713ad1d63761c3d5c0f1e486677a72 (diff)
downloadlinux-7dcc74d30e836ac96d2b9552c80e6fca03155c35.tar.xz
xhci: Limit USB2 port wake support for AMD Promontory hosts
commit dec08194ffeccfa1cf085906b53d301930eae18f 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> [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/block/brd.c')
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