net: dsa: fix value check in bcm_sf2_sw_probe()

in bcm_sf2_sw_probe(), check the return value of clk_prepare_enable()
and return the error code if clk_prepare_enable() returns an
unexpected value.

Fixes: e9ec5c3bd238 ("net: dsa: bcm_sf2: request and handle clocks")
Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@163.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20230726170506.16547-1-ruc_gongyuanjun@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index cde253d..72374b0 100644 (file)
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -1436,7 +1436,9 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev)
        if (IS_ERR(priv->clk))
                return PTR_ERR(priv->clk);
 
-       clk_prepare_enable(priv->clk);
+       ret = clk_prepare_enable(priv->clk);
+       if (ret)
+               return ret;
 
        priv->clk_mdiv = devm_clk_get_optional(&pdev->dev, "sw_switch_mdiv");
        if (IS_ERR(priv->clk_mdiv)) {
@@ -1444,7 +1446,9 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev)
                goto out_clk;
        }
 
-       clk_prepare_enable(priv->clk_mdiv);
+       ret = clk_prepare_enable(priv->clk_mdiv);
+       if (ret)
+               goto out_clk;
 
        ret = bcm_sf2_sw_rst(priv);
        if (ret) {