mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-04-09 11:11:13 -04:00
Code Issues Packages Projects Releases Wiki Activity

usb: typec: anx7411: fix fwnode_handle reference leak

Browse Source 
An fwnode_handle and usb_role_switch are obtained with an incremented
refcount in anx7411_typec_port_probe(), however the refcounts are not
decremented in the error path. The fwnode_handle is also not decremented
in the .remove() function. Therefore, call fwnode_handle_put() and
usb_role_switch_put() accordingly.

Fixes: fe6d8a9c8e ("usb: typec: anx7411: Add Analogix PD ANX7411 support")
Cc: stable@vger.kernel.org
Signed-off-by: Joe Hattori <joe@pf.is.s.u-tokyo.ac.jp>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20241121023429.962848-1-joe@pf.is.s.u-tokyo.ac.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Joe Hattori
2024-11-21 11:34:29 +09:00
committed by Greg Kroah-Hartman
parent 0d2ada0522
commit 645d56e4cc
1 changed files with 29 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
drivers/usb/typec/anx7411.c
View File

@@ -1021,6 +1021,16 @@ static void anx7411_port_unregister_altmodes(struct typec_altmode **adev)
}
}
static void anx7411_port_unregister(struct typec_params *typecp)
{
fwnode_handle_put(typecp->caps.fwnode);
anx7411_port_unregister_altmodes(typecp->port_amode);
if (typecp->port)
typec_unregister_port(typecp->port);
if (typecp->role_sw)
usb_role_switch_put(typecp->role_sw);
}
static int anx7411_usb_mux_set(struct typec_mux_dev *mux,
struct typec_mux_state *state)
{
@@ -1154,34 +1164,34 @@ static int anx7411_typec_port_probe(struct anx7411_data *ctx,
ret = fwnode_property_read_string(fwnode, "power-role", &buf);
if (ret) {
dev_err(dev, "power-role not found: %d\n", ret);
return ret;
goto put_fwnode;
}
ret = typec_find_port_power_role(buf);
if (ret < 0)
return ret;
goto put_fwnode;
cap->type = ret;
ret = fwnode_property_read_string(fwnode, "data-role", &buf);
if (ret) {
dev_err(dev, "data-role not found: %d\n", ret);
return ret;
goto put_fwnode;
}
ret = typec_find_port_data_role(buf);
if (ret < 0)
return ret;
goto put_fwnode;
cap->data = ret;
ret = fwnode_property_read_string(fwnode, "try-power-role", &buf);
if (ret) {
dev_err(dev, "try-power-role not found: %d\n", ret);
return ret;
goto put_fwnode;
}
ret = typec_find_power_role(buf);
if (ret < 0)
return ret;
goto put_fwnode;
cap->prefer_role = ret;
/* Get source pdos */
@@ -1193,7 +1203,7 @@ static int anx7411_typec_port_probe(struct anx7411_data *ctx,
typecp->src_pdo_nr);
if (ret < 0) {
dev_err(dev, "source cap validate failed: %d\n", ret);
return -EINVAL;
goto put_fwnode;
}
typecp->caps_flags |= HAS_SOURCE_CAP;
@@ -1207,7 +1217,7 @@ static int anx7411_typec_port_probe(struct anx7411_data *ctx,
typecp->sink_pdo_nr);
if (ret < 0) {
dev_err(dev, "sink cap validate failed: %d\n", ret);
return -EINVAL;
goto put_fwnode;
}
for (i = 0; i < typecp->sink_pdo_nr; i++) {
@@ -1251,13 +1261,21 @@ static int anx7411_typec_port_probe(struct anx7411_data *ctx,
ret = PTR_ERR(ctx->typec.port);
ctx->typec.port = NULL;
dev_err(dev, "Failed to register type c port %d\n", ret);
return ret;
goto put_usb_role_switch;
}
typec_port_register_altmodes(ctx->typec.port, NULL, ctx,
ctx->typec.port_amode,
MAX_ALTMODE);
return 0;
put_usb_role_switch:
if (ctx->typec.role_sw)
usb_role_switch_put(ctx->typec.role_sw);
put_fwnode:
fwnode_handle_put(fwnode);
return ret;
}
static int anx7411_typec_check_connection(struct anx7411_data *ctx)
@@ -1523,8 +1541,7 @@ static int anx7411_i2c_probe(struct i2c_client *client)
destroy_workqueue(plat->workqueue);
free_typec_port:
typec_unregister_port(plat->typec.port);
anx7411_port_unregister_altmodes(plat->typec.port_amode);
anx7411_port_unregister(&plat->typec);
free_typec_switch:
anx7411_unregister_switch(plat);
@@ -1548,17 +1565,11 @@ static void anx7411_i2c_remove(struct i2c_client *client)
i2c_unregister_device(plat->spi_client);
if (plat->typec.role_sw)
usb_role_switch_put(plat->typec.role_sw);
anx7411_unregister_mux(plat);
anx7411_unregister_switch(plat);
if (plat->typec.port)
typec_unregister_port(plat->typec.port);
anx7411_port_unregister_altmodes(plat->typec.port_amode);
anx7411_port_unregister(&plat->typec);
}
static const struct i2c_device_id anx7411_id[] = {