linux-kernel - [PATCH net v2 2/2] net: phylink: Add module_exit

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Date: Thu, 21 Dec 2023 16:51:09 +0800
From: "Gan, Yi Fang" <yi.fang.gan@...el.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Halaney <ahalaney@...hat.com>,
	Javier Martinez Canillas <javierm@...hat.com>,
	John Stultz <jstultz@...gle.com>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Gan Yi Fang <yi.fang.gan@...el.com>,
	Jens Axboe <axboe@...nel.dk>,
	Russell King <linux@...linux.org.uk>,
	Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Marek Behún <kabel@...nel.org>,
	netdev@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Looi Hong Aun <hong.aun.looi@...el.com>,
	Voon Weifeng <weifeng.voon@...el.com>,
	Song Yoong Siang <yoong.siang.song@...el.com>,
	Lai Peter Jun Ann <peter.jun.ann.lai@...el.com>,
	Choong Yong Liang <yong.liang.choong@...el.com>
Subject: [PATCH net v2 2/2] net: phylink: Add module_exit_stub()

In delete_module(), if mod->init callback is defined but mod->exit
callback is not defined, it will assume the module cannot be removed
and return EBUSY. The module_exit() is missing from current phylink
module drive causing failure while unloading it.
Add module_exit_stub() in phylink for the module to be unloadable.

Fixes: eca68a3c7d05 ("net: phylink: pass supported host PHY interface modes to phylib for SFP's PHYs")
Cc: <stable@...r.kernel.org> # 6.1+
Signed-off-by: Gan, Yi Fang <yi.fang.gan@...el.com>
---
 drivers/net/phy/phylink.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 25c19496a336..823c9b43cd92 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -3725,6 +3725,7 @@ static int __init phylink_init(void)
 }
 
 module_init(phylink_init);
+module_exit_stub(phylink);
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("phylink models the MAC to optional PHY connection");
-- 
2.34.1