can: ti_hecc: ti_hecc_probe(): add missed clk_disable_unprepare() in error path

The driver forgets to call clk_disable_unprepare() in error path after
a success calling for clk_prepare_enable().

Fix it by adding a clk_disable_unprepare() in error path.

Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1594973079-27743-1-git-send-email-zhangchangzhong@huawei.com
Fixes: befa60113ce7 ("can: ti_hecc: add missing prepare and unprepare of the clock")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index 1d63006c97bcd84a6f4cb0ca77a22d34b2cedb8e..9913f5458279b66a4d02774838e23c0d2657e3fd 100644 (file)
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -933,7 +933,7 @@ static int ti_hecc_probe(struct platform_device *pdev)
        err = clk_prepare_enable(priv->clk);
        if (err) {
                dev_err(&pdev->dev, "clk_prepare_enable() failed\n");
-               goto probe_exit_clk;
+               goto probe_exit_release_clk;
        }
 
        priv->offload.mailbox_read = ti_hecc_mailbox_read;
@@ -942,7 +942,7 @@ static int ti_hecc_probe(struct platform_device *pdev)
        err = can_rx_offload_add_timestamp(ndev, &priv->offload);
        if (err) {
                dev_err(&pdev->dev, "can_rx_offload_add_timestamp() failed\n");
-               goto probe_exit_clk;
+               goto probe_exit_disable_clk;
        }
 
        err = register_candev(ndev);
@@ -960,7 +960,9 @@ static int ti_hecc_probe(struct platform_device *pdev)
 
 probe_exit_offload:
        can_rx_offload_del(&priv->offload);
-probe_exit_clk:
+probe_exit_disable_clk:
+       clk_disable_unprepare(priv->clk);
+probe_exit_release_clk:
        clk_put(priv->clk);
 probe_exit_candev:
        free_candev(ndev);