diff mbox series

[v1,1/2] usb: typec: ucsi: Fix reuse of completion structure

Message ID 20220405134824.68067-2-heikki.krogerus@linux.intel.com (mailing list archive)
State Accepted
Commit e25adcca917d7e4cdc1dc6444d0692ffda7594bf
Headers show
Series usb: typec: ucsi: Role swapping fixes | expand

Commit Message

Heikki Krogerus April 5, 2022, 1:48 p.m. UTC 
The role swapping completion variable is reused, so it needs
to be reinitialised every time. Otherwise it will be marked
as done after the first time it's used and completing
immediately.

Link: https://lore.kernel.org/linux-usb/20220325203959.GA19752@jackp-linux.qualcomm.com/
Fixes: 6df475f804e6 ("usb: typec: ucsi: Start using struct typec_operations")
Reported-and-suggested-by: Jack Pham <quic_jackp@quicinc.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
 drivers/usb/typec/ucsi/ucsi.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index f0c2fa19f3e0f..576cb0e68596f 100644
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -949,6 +949,8 @@  static int ucsi_dr_swap(struct typec_port *port, enum typec_data_role role)
 	     role == TYPEC_HOST))
 		goto out_unlock;
 
+	reinit_completion(&con->complete);
+
 	command = UCSI_SET_UOR | UCSI_CONNECTOR_NUMBER(con->num);
 	command |= UCSI_SET_UOR_ROLE(role);
 	command |= UCSI_SET_UOR_ACCEPT_ROLE_SWAPS;
@@ -985,6 +987,8 @@  static int ucsi_pr_swap(struct typec_port *port, enum typec_role role)
 	if (cur_role == role)
 		goto out_unlock;
 
+	reinit_completion(&con->complete);
+
 	command = UCSI_SET_PDR | UCSI_CONNECTOR_NUMBER(con->num);
 	command |= UCSI_SET_PDR_ROLE(role);
 	command |= UCSI_SET_PDR_ACCEPT_ROLE_SWAPS;