net: ibm: emac: tah: 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/20241030203727.6039-3-rosenp@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/ibm/emac/tah.c b/drivers/net/ethernet/ibm/emac/tah.c
index 267c23ec15d7171978a20b69cb3cfc2bcc076c25..4b325505053b733f4fc648849af368acd34f5f7c 100644 (file)
--- a/drivers/net/ethernet/ibm/emac/tah.c
+++ b/drivers/net/ethernet/ibm/emac/tah.c
@@ -90,13 +90,17 @@ static int tah_probe(struct platform_device *ofdev)
        struct device_node *np = ofdev->dev.of_node;
        struct tah_instance *dev;
        struct resource regs;
+       int err;
 
        dev = devm_kzalloc(&ofdev->dev, sizeof(struct tah_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;
 
        if (of_address_to_resource(np, 0, &regs)) {