diff options
| author | Prashant Malani <pmalani@chromium.org> | 2021-04-20 21:21:09 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-22 11:40:53 +0200 |
| commit | 6a40e3f9a803d958ea497bc8522b33597b763b5c (patch) | |
| tree | 003ba5094a62a6b2185ee2f50a751e6405934a50 /drivers | |
| parent | b01b7999f49e9f9a4278442c0af73b8777f68f2c (diff) | |
platform/chrome: cros_ec_typec: Add DP mode check
[ Upstream commit c5bb32f57bf3a30ed03be51f7be0840325ba8b4a ]
There are certain transitional situations where the dp_mode field in the
PD_CONTROL response might not be populated with the right DP pin
assignment value yet. Add a check for that to avoid sending an invalid
value to the Type C mode switch.
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20210421042108.2002-1-pmalani@chromium.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_typec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c index 31be31161350..036d54dc52e2 100644 --- a/drivers/platform/chrome/cros_ec_typec.c +++ b/drivers/platform/chrome/cros_ec_typec.c @@ -475,6 +475,11 @@ static int cros_typec_enable_dp(struct cros_typec_data *typec, return -ENOTSUPP; } + if (!pd_ctrl->dp_mode) { + dev_err(typec->dev, "No valid DP mode provided.\n"); + return -EINVAL; + } + /* Status VDO. */ dp_data.status = DP_STATUS_ENABLED; if (port->mux_flags & USB_PD_MUX_HPD_IRQ) |