net: ibm: emac: zmii: use devm for mutex_init

It seems that since inception, this driver never called mutex_destroy in
_remove. Use devm to handle this automatically.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20241030203727.6039-9-rosenp@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/ibm/emac/zmii.c b/drivers/net/ethernet/ibm/emac/zmii.c
index e9097b9ceb3dc906f637d6f344962e1416525d33..cb57c960b34d2fa6ed38d6a8e63f730bcac64792 100644 (file)
--- a/drivers/net/ethernet/ibm/emac/zmii.c
+++ b/drivers/net/ethernet/ibm/emac/zmii.c
@@ -235,13 +235,17 @@ static int zmii_probe(struct platform_device *ofdev)
        struct device_node *np = ofdev->dev.of_node;
        struct zmii_instance *dev;
        struct resource regs;
+       int err;
 
        dev = devm_kzalloc(&ofdev->dev, sizeof(struct zmii_instance),
                           GFP_KERNEL);
        if (!dev)
                return -ENOMEM;
 
-       mutex_init(&dev->lock);
+       err = devm_mutex_init(&ofdev->dev, &dev->lock);
+       if (err)
+               return err;
+
        dev->ofdev = ofdev;
        dev->mode = PHY_INTERFACE_MODE_NA;