From: RD Babiera Date: Thu, 21 Aug 2025 20:37:57 +0000 (+0000) Subject: usb: typec: tcpm: properly deliver cable vdms to altmode drivers X-Git-Tag: v6.12.48~14 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=edfa1f21c278f62667ce80e3eceb9b558d94e822;p=thirdparty%2Fkernel%2Fstable.git usb: typec: tcpm: properly deliver cable vdms to altmode drivers commit f34bfcc77b18375a87091c289c2eb53c249787b4 upstream. tcpm_handle_vdm_request delivers messages to the partner altmode or the cable altmode depending on the SVDM response type, which is incorrect. The partner or cable should be chosen based on the received message type instead. Also add this filter to ADEV_NOTIFY_USB_AND_QUEUE_VDM, which is used when the Enter Mode command is responded to by a NAK on SOP or SOP' and when the Exit Mode command is responded to by an ACK on SOP. Fixes: 7e7877c55eb1 ("usb: typec: tcpm: add alt mode enter/exit/vdm support for sop'") Cc: stable@vger.kernel.org Signed-off-by: RD Babiera Reviewed-by: Badhri Jagan Sridharan Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20250821203759.1720841-2-rdbabiera@google.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 43e3dac5129fa..92ce01b7d049f 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -2375,17 +2375,21 @@ static void tcpm_handle_vdm_request(struct tcpm_port *port, case ADEV_NONE: break; case ADEV_NOTIFY_USB_AND_QUEUE_VDM: - WARN_ON(typec_altmode_notify(adev, TYPEC_STATE_USB, NULL)); - typec_altmode_vdm(adev, p[0], &p[1], cnt); + if (rx_sop_type == TCPC_TX_SOP_PRIME) { + typec_cable_altmode_vdm(adev, TYPEC_PLUG_SOP_P, p[0], &p[1], cnt); + } else { + WARN_ON(typec_altmode_notify(adev, TYPEC_STATE_USB, NULL)); + typec_altmode_vdm(adev, p[0], &p[1], cnt); + } break; case ADEV_QUEUE_VDM: - if (response_tx_sop_type == TCPC_TX_SOP_PRIME) + if (rx_sop_type == TCPC_TX_SOP_PRIME) typec_cable_altmode_vdm(adev, TYPEC_PLUG_SOP_P, p[0], &p[1], cnt); else typec_altmode_vdm(adev, p[0], &p[1], cnt); break; case ADEV_QUEUE_VDM_SEND_EXIT_MODE_ON_FAIL: - if (response_tx_sop_type == TCPC_TX_SOP_PRIME) { + if (rx_sop_type == TCPC_TX_SOP_PRIME) { if (typec_cable_altmode_vdm(adev, TYPEC_PLUG_SOP_P, p[0], &p[1], cnt)) { int svdm_version = typec_get_cable_svdm_version(