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authorLinus Torvalds <torvalds@linux-foundation.org>2021-08-21 11:10:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-08-21 11:10:06 -0700
commitf4ff9e6b0126706078a5241561546743b7d92628 (patch)
tree0556f5c28d62668fe84b1141b56cf5a06a8de586
parenta09434f181f3ae3a0a6a42bfcf0dc375f0eb26a2 (diff)
parent5571ea3117ca22849072adb58074fb5a2fd12c00 (diff)
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Merge tag 'usb-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fix from Greg KH: "Here is a single USB typec tcpm fix for a reported problem for 5.14-rc7. It showed up in 5.13 and resolves an issue that Hans found. It has been in linux-next this week with no reported problems" * tag 'usb-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: typec: tcpm: Fix VDMs sometimes not being forwarded to alt-mode drivers
-rw-r--r--drivers/usb/typec/tcpm/tcpm.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index b9bb63d749ec..f4079b5cb26d 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -1737,6 +1737,10 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev,
return rlen;
}
+static void tcpm_pd_handle_msg(struct tcpm_port *port,
+ enum pd_msg_request message,
+ enum tcpm_ams ams);
+
static void tcpm_handle_vdm_request(struct tcpm_port *port,
const __le32 *payload, int cnt)
{
@@ -1764,11 +1768,11 @@ static void tcpm_handle_vdm_request(struct tcpm_port *port,
port->vdm_state = VDM_STATE_DONE;
}
- if (PD_VDO_SVDM(p[0])) {
+ if (PD_VDO_SVDM(p[0]) && (adev || tcpm_vdm_ams(port) || port->nr_snk_vdo)) {
rlen = tcpm_pd_svdm(port, adev, p, cnt, response, &adev_action);
} else {
if (port->negotiated_rev >= PD_REV30)
- tcpm_queue_message(port, PD_MSG_CTRL_NOT_SUPP);
+ tcpm_pd_handle_msg(port, PD_MSG_CTRL_NOT_SUPP, NONE_AMS);
}
/*
@@ -2471,10 +2475,7 @@ static void tcpm_pd_data_request(struct tcpm_port *port,
NONE_AMS);
break;
case PD_DATA_VENDOR_DEF:
- 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);
+ tcpm_handle_vdm_request(port, msg->payload, cnt);
break;
case PD_DATA_BIST:
port->bist_request = le32_to_cpu(msg->payload[0]);