From: Lu Hongfei luhongfei@vivo.com
stable inclusion from stable-v6.6.3 commit bce7b184f2698a2bdf73156d0256bf8cef36a4ed category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8LBQP
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 5692aeea5bcb9331e956628c3bc8fc9afcc9765d ]
The device_for_each_child_node loop should call fwnode_handle_put() before return in the error cases, to avoid resource leaks.
Let's fix this bug in pmic_glink_altmode_probe().
Signed-off-by: Lu Hongfei luhongfei@vivo.com Link: https://lore.kernel.org/r/20230612133452.47315-1-luhongfei@vivo.com [bjorn: Rebased patch, moved fw_handle_put() from jump target into the loop] Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/soc/qcom/pmic_glink_altmode.c | 30 ++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-)
diff --git a/drivers/soc/qcom/pmic_glink_altmode.c b/drivers/soc/qcom/pmic_glink_altmode.c index 974c14d1e0bf..6f8b2f7ae3cc 100644 --- a/drivers/soc/qcom/pmic_glink_altmode.c +++ b/drivers/soc/qcom/pmic_glink_altmode.c @@ -444,6 +444,7 @@ static int pmic_glink_altmode_probe(struct auxiliary_device *adev, ret = fwnode_property_read_u32(fwnode, "reg", &port); if (ret < 0) { dev_err(dev, "missing reg property of %pOFn\n", fwnode); + fwnode_handle_put(fwnode); return ret; }
@@ -454,6 +455,7 @@ static int pmic_glink_altmode_probe(struct auxiliary_device *adev,
if (altmode->ports[port].altmode) { dev_err(dev, "multiple connector definition for port %u\n", port); + fwnode_handle_put(fwnode); return -EINVAL; }
@@ -468,45 +470,59 @@ static int pmic_glink_altmode_probe(struct auxiliary_device *adev, alt_port->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
ret = devm_drm_bridge_add(dev, &alt_port->bridge); - if (ret) + if (ret) { + fwnode_handle_put(fwnode); return ret; + }
alt_port->dp_alt.svid = USB_TYPEC_DP_SID; alt_port->dp_alt.mode = USB_TYPEC_DP_MODE; alt_port->dp_alt.active = 1;
alt_port->typec_mux = fwnode_typec_mux_get(fwnode); - if (IS_ERR(alt_port->typec_mux)) + if (IS_ERR(alt_port->typec_mux)) { + fwnode_handle_put(fwnode); return dev_err_probe(dev, PTR_ERR(alt_port->typec_mux), "failed to acquire mode-switch for port: %d\n", port); + }
ret = devm_add_action_or_reset(dev, pmic_glink_altmode_put_mux, alt_port->typec_mux); - if (ret) + if (ret) { + fwnode_handle_put(fwnode); return ret; + }
alt_port->typec_retimer = fwnode_typec_retimer_get(fwnode); - if (IS_ERR(alt_port->typec_retimer)) + if (IS_ERR(alt_port->typec_retimer)) { + fwnode_handle_put(fwnode); return dev_err_probe(dev, PTR_ERR(alt_port->typec_retimer), "failed to acquire retimer-switch for port: %d\n", port); + }
ret = devm_add_action_or_reset(dev, pmic_glink_altmode_put_retimer, alt_port->typec_retimer); - if (ret) + if (ret) { + fwnode_handle_put(fwnode); return ret; + }
alt_port->typec_switch = fwnode_typec_switch_get(fwnode); - if (IS_ERR(alt_port->typec_switch)) + if (IS_ERR(alt_port->typec_switch)) { + fwnode_handle_put(fwnode); return dev_err_probe(dev, PTR_ERR(alt_port->typec_switch), "failed to acquire orientation-switch for port: %d\n", port); + }
ret = devm_add_action_or_reset(dev, pmic_glink_altmode_put_switch, alt_port->typec_switch); - if (ret) + if (ret) { + fwnode_handle_put(fwnode); return ret; + } }
altmode->client = devm_pmic_glink_register_client(dev,