From patchwork Sun Dec 3 16:05:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 13477347 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D24B4CF for ; Sun, 3 Dec 2023 08:06:19 -0800 (PST) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1r9oz0-0005gg-DZ; Sun, 03 Dec 2023 17:06:14 +0100 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1r9oyz-00DK9b-AA; Sun, 03 Dec 2023 17:06:13 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1r9oyz-00DPoY-18; Sun, 03 Dec 2023 17:06:13 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: "James E.J. Bottomley" , "Martin K. Petersen" Cc: linux-scsi@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 01/14] scsi: a3000: Convert to platform remove callback returning void Date: Sun, 3 Dec 2023 17:05:46 +0100 Message-ID: <811d180950b76c2d95cd080e3c251757ca011380.1701619134.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2007; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=FWmyBG6+tosrER5aYhbcZFS6iW6Rp5zpoo99vHGj6y8=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlbKdZ5mpZm/TAn5pBfmQQEXUh96znGSqOye8Lm CKdnheIJxiJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZWynWQAKCRCPgPtYfRL+ Ti6JCACt/hu9m+xc9l8ynuGIyK/CqoUmIUb+jp5LthyeKHHb4bwhXSwiWsnm2QzQrpjPKX9GR8J NHJheZS3LWqj+dqRhBTbb+dC0nxbTHlGH9XsMN3xYU0aDRVSnCM/NRKzgKIHuLrizWpILtNPUNU Rt8mqhWWmvNZu1W5tBGwZ0miMEawxr27FyraZ1xatBqcDPh2N+7ugeMeDs7keZYW1nYGjUvEvJ7 SK4XuSIGQARQQH64FsykVM6wPrl6SrUvjIntt3DJL/nI94mocTLnzXznS48Ik5LupHxI3rESWsm fGKL/qqsP2dzF7fFDFIsnpKyz7hw+HFLs+w7xatMZOpkzhhW 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.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-scsi@vger.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() will be renamed to .remove(). In the error path emit an error message replacing the (less useful) message by the core. Apart from the improved error message there is no change in behaviour. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König --- drivers/scsi/a3000.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/a3000.c b/drivers/scsi/a3000.c index c3028726bbe4..378906f77909 100644 --- a/drivers/scsi/a3000.c +++ b/drivers/scsi/a3000.c @@ -282,7 +282,7 @@ static int __init amiga_a3000_scsi_probe(struct platform_device *pdev) return error; } -static int __exit amiga_a3000_scsi_remove(struct platform_device *pdev) +static void __exit amiga_a3000_scsi_remove(struct platform_device *pdev) { struct Scsi_Host *instance = platform_get_drvdata(pdev); struct a3000_hostdata *hdata = shost_priv(instance); @@ -293,11 +293,10 @@ static int __exit amiga_a3000_scsi_remove(struct platform_device *pdev) free_irq(IRQ_AMIGA_PORTS, instance); scsi_host_put(instance); release_mem_region(res->start, resource_size(res)); - return 0; } static struct platform_driver amiga_a3000_scsi_driver = { - .remove = __exit_p(amiga_a3000_scsi_remove), + .remove_new = __exit_p(amiga_a3000_scsi_remove), .driver = { .name = "amiga-a3000-scsi", },