linux-kernel - [PATCH] xtensa: ISS: add comment about etherdev freeing

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Date:   Mon,  3 Jul 2023 10:03:35 -0700
From:   Max Filippov <jcmvbkbc@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Chris Zankel <chris@...kel.net>, Minjie Du <duminjie@...o.com>,
        Max Filippov <jcmvbkbc@...il.com>
Subject: [PATCH] xtensa: ISS: add comment about etherdev freeing

iss_net_configure explicitly frees etherdev in all error return paths
except one where register_netdevice fails. In that remaining error
return path the etherdev is freed by the iss_net_pdev_release callback
triggered by the platform_device_unregister call. Add a comment stating
that.

Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
---
 arch/xtensa/platforms/iss/network.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index 9ac46ab3a296..7b97e6ab85a4 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -540,6 +540,7 @@ static void iss_net_configure(int index, char *init)
 		rtnl_unlock();
 		pr_err("%s: error registering net device!\n", dev->name);
 		platform_device_unregister(&lp->pdev);
+		/* dev is freed by the iss_net_pdev_release callback */
 		return;
 	}
 	rtnl_unlock();
-- 
2.30.2