diff options
| author | Xu Yang <xu.yang_2@nxp.com> | 2026-07-23 18:46:14 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-08-14 10:49:06 +0900 |
| commit | b691a07c5f644080374ddd24de6a0e05f5d28744 (patch) | |
| tree | 922be64a7c3858b0264a95cdb66b9cae943587bb /include/linux | |
| parent | b1e24de475bf2d66fffc9103f3444b783527d55a (diff) | |
usb: typec: tcpci: pass correct rx_type to tcpm_pd_receive()
Previously, tcpci_irq() always passed TCPC_TX_SOP as the receive type
to tcpm_pd_receive(), ignoring the actual frame type reported by the
TCPC_RX_BUF_FRAME_TYPE register.
Cache the TCPC_RX_DETECT register value in rx_type_mask variable. When
a PD messageis received, read TCPC_RX_BUF_FRAME_TYPE register and handle
the message only if its frame type is enabled in mask.
The TCPC_RX_BUF_FRAME_TYPE register records the received message type,
which has a 1:1 mapping to enum tcpm_transmit_type.
Fixes: fb7ff25ae433 ("usb: typec: tcpm: add discover identity support for SOP'")
Cc: stable@vger.kernel.org
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://patch.msgid.link/20260723104614.3717623-1-xu.yang_2@oss.nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/usb/tcpci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h index f7f5cfbdef12..9b46a6bc762c 100644 --- a/include/linux/usb/tcpci.h +++ b/include/linux/usb/tcpci.h @@ -144,6 +144,7 @@ #define TCPC_RX_BUF_FRAME_TYPE 0x31 #define TCPC_RX_BUF_FRAME_TYPE_SOP 0 #define TCPC_RX_BUF_FRAME_TYPE_SOP1 1 +#define TCPC_RX_BUF_FRAME_TYPE_MASK GENMASK(2, 0) #define TCPC_RX_HDR 0x32 #define TCPC_RX_DATA 0x34 /* through 0x4f */ |