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| author | Badhri Jagan Sridharan <badhri@google.com> | 2020-04-02 14:59:47 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-16 15:01:42 +0200 |
| commit | 901789745a053286e0ced37960d44fa60267b940 (patch) | |
| tree | 9ee5365dab6b6f236cac2eb73d3892494b3288b1 /kernel/stacktrace.c | |
| parent | 1c2e54fbf1da5e5445a0ab132c862b02ccd8d230 (diff) | |
| download | lwn-901789745a053286e0ced37960d44fa60267b940.tar.gz lwn-901789745a053286e0ced37960d44fa60267b940.zip | |
usb: typec: tcpm: Ignore CC and vbus changes in PORT_RESET change
After PORT_RESET, the port is set to the appropriate
default_state. Ignore processing CC changes here as this
could cause the port to be switched into sink states
by default.
echo source > /sys/class/typec/port0/port_type
Before:
[ 154.528547] pending state change PORT_RESET -> PORT_RESET_WAIT_OFF @ 100 ms
[ 154.528560] CC1: 0 -> 0, CC2: 3 -> 0 [state PORT_RESET, polarity 0, disconnected]
[ 154.528564] state change PORT_RESET -> SNK_UNATTACHED
After:
[ 151.068814] pending state change PORT_RESET -> PORT_RESET_WAIT_OFF @ 100 ms [rev3 NONE_AMS]
[ 151.072440] CC1: 3 -> 0, CC2: 0 -> 0 [state PORT_RESET, polarity 0, disconnected]
[ 151.172117] state change PORT_RESET -> PORT_RESET_WAIT_OFF [delayed 100 ms]
[ 151.172136] pending state change PORT_RESET_WAIT_OFF -> SRC_UNATTACHED @ 870 ms [rev3 NONE_AMS]
[ 152.060106] state change PORT_RESET_WAIT_OFF -> SRC_UNATTACHED [delayed 870 ms]
[ 152.060118] Start toggling
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200402215947.176577-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/stacktrace.c')
0 files changed, 0 insertions, 0 deletions