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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: linux-can@vger.kernel.org, netdev@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 11/19] can: m_can: Convert to platform remove callback returning void Date: Fri, 12 May 2023 23:27:17 +0200 Message-Id: <20230512212725.143824-12-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230512212725.143824-1-u.kleine-koenig@pengutronix.de> References: <20230512212725.143824-1-u.kleine-koenig@pengutronix.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1965; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=zzskZ5tpf+H24pFcmP7ncTMlaLZrL4bcJODIW61mQmk=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkXq8w2gvE9gI4lOBmX9qRsJ3499FKdlPZff/Bs ATKLvBqnJuJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZF6vMAAKCRCPgPtYfRL+ TmbSB/9SNcnOrEOSj17BHCNF7w/0IovmFO0taTKIcc/1cdqMI+oPq0DE0pk0rvc43qAuHXOvwx8 ReBhFCL0kkcFEnyFeOLC9PXj/nvp9pH24h9pwhydI4TOX0+6IUgQxyrxDwyqq+NHj0cQ7NqA1hn iKZIqI2CKx9cc6Niq2fY1drCuEFNId5zOiyGOAsBsRuHGYshMbP2P70NC6aBL2uFC2tAVn9kJPG OV2z2HZDQXoFHm+6bWtlS1mIsidfcDM6A8b4Qi1R5G+H96bT8kIiRCERxLy43MdOwVfK5qUYPpq YqIngeF2peFOgcEjDXvH6gr9+zrL7xxWQIPVDrhtuG+bUmrX X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() is renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König --- drivers/net/can/m_can/m_can_platform.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/can/m_can/m_can_platform.c b/drivers/net/can/m_can/m_can_platform.c index 9c1dcf838006..94dc82644113 100644 --- a/drivers/net/can/m_can/m_can_platform.c +++ b/drivers/net/can/m_can/m_can_platform.c @@ -164,7 +164,7 @@ static __maybe_unused int m_can_resume(struct device *dev) return m_can_class_resume(dev); } -static int m_can_plat_remove(struct platform_device *pdev) +static void m_can_plat_remove(struct platform_device *pdev) { struct m_can_plat_priv *priv = platform_get_drvdata(pdev); struct m_can_classdev *mcan_class = &priv->cdev; @@ -172,8 +172,6 @@ static int m_can_plat_remove(struct platform_device *pdev) m_can_class_unregister(mcan_class); m_can_class_free_dev(mcan_class->net); - - return 0; } static int __maybe_unused m_can_runtime_suspend(struct device *dev) @@ -223,7 +221,7 @@ static struct platform_driver m_can_plat_driver = { .pm = &m_can_pmops, }, .probe = m_can_plat_probe, - .remove = m_can_plat_remove, + .remove_new = m_can_plat_remove, }; module_platform_driver(m_can_plat_driver);