From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Subject: [PATCH v1 1/1] usb: typec: ucsi: Put fwnode in any case during ->probe()
Date: Wed, 5 May 2021 01:23:37 +0300 [thread overview]
Message-ID: <20210504222337.3151726-1-andy.shevchenko@gmail.com> (raw)
device_for_each_child_node() bumps a reference counting of a returned variable.
We have to balance it whenever we return to the caller.
Fixes: c1b0bc2dabfa ("usb: typec: Add support for UCSI interface")
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
drivers/usb/typec/ucsi/ucsi.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index 282c3c825c13..0e1cec346e0f 100644
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -999,6 +999,7 @@ static const struct typec_operations ucsi_ops = {
.pr_set = ucsi_pr_swap
};
+/* Caller must call fwnode_handle_put() after use */
static struct fwnode_handle *ucsi_find_fwnode(struct ucsi_connector *con)
{
struct fwnode_handle *fwnode;
@@ -1033,7 +1034,7 @@ static int ucsi_register_port(struct ucsi *ucsi, int index)
command |= UCSI_CONNECTOR_NUMBER(con->num);
ret = ucsi_send_command(ucsi, command, &con->cap, sizeof(con->cap));
if (ret < 0)
- goto out;
+ goto out_unlock;
if (con->cap.op_mode & UCSI_CONCAP_OPMODE_DRP)
cap->data = TYPEC_PORT_DRD;
@@ -1151,6 +1152,8 @@ static int ucsi_register_port(struct ucsi *ucsi, int index)
trace_ucsi_register_port(con->num, &con->status);
out:
+ fwnode_handle_put(cap->fwnode);
+out_unlock:
mutex_unlock(&con->lock);
return ret;
}
--
2.31.1
next reply other threads:[~2021-05-04 22:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-04 22:23 Andy Shevchenko [this message]
2021-05-05 7:09 ` [PATCH v1 1/1] usb: typec: ucsi: Put fwnode in any case during ->probe() Heikki Krogerus
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