patch "usb: typec: tcpm: Respond Not_Supported if no snk_vdo" added to usb-linus

This is a note to let you know that I've just added the patch titled

usb: typec: tcpm: Respond Not_Supported if no snk_vdo

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From a20dcf53ea9836387b229c4878f9559cf1b55b71 Mon Sep 17 00:00:00 2001
From: Kyle Tso <[email protected]>
Date: Sun, 23 May 2021 09:58:55 +0800
Subject: usb: typec: tcpm: Respond Not_Supported if no snk_vdo

If snk_vdo is not populated from fwnode, it implies the port does not support responding to SVDM commands. Not_Supported Message shall be sent if the contract is in PD3. And for PD2, the port shall ignore the commands.

---
 drivers/usb/typec/tcpm/tcpm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

index 6ea5df3782cf..9ce8c9af4da5 100644
@@ -2430,7 +2430,10 @@ static void tcpm_pd_data_request(struct tcpm_port *port,
 					   NONE_AMS);
 		break;
 	case PD_DATA_VENDOR_DEF:
-		tcpm_handle_vdm_request(port, msg->payload, cnt);
+		if (tcpm_vdm_ams(port) || port->nr_snk_vdo)
+			tcpm_handle_vdm_request(port, msg->payload, cnt);
+		else if (port->negotiated_rev > PD_REV20)
+			tcpm_pd_handle_msg(port, PD_MSG_CTRL_NOT_SUPP, NONE_AMS);
 		break;
 	case PD_DATA_BIST:
 		port->bist_request = le32_to_cpu(msg->payload[0]);

2.31.1