From patchwork Sun Dec 3 16:05:47 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: 13477352 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 D598FFF 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 1r9oz0-0005gh-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-00DK9e-ID; 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-00DPoc-9F; 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 02/14] scsi: a4000t: Convert to platform remove callback returning void Date: Sun, 3 Dec 2023 17:05:47 +0100 Message-ID: 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=2006; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=KzSqkQS+P+EAs50HUDLbAV72d+j525CgjL8snTXrU2M=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlbKdanxP0l9h7zpQ2OK3kJQheNg7pwaiKNxvci hEg/uqVqt2JATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZWynWgAKCRCPgPtYfRL+ TrwBB/0RsEXAgHedciw4T23tqItOhKnDusdIzRtyAHIU73fnQWNPaHy2e8L2JZx7ULFm5AdHg9d xmOP9rvuMgepnU/W1W9wj3R1VRLwaNAI55gZHfIyj4iWQZgq4cOuHT+Hi5oqkg0iPEtoiz8PvZn qyQvMk6sCmNvWg41HWGGjX2Mfm9m+Xg+xqmA1JHJzO5IQNUdhG5iUOYVfhgEa3AyNJAPsTUMCEl buSRCEYQsbCjlAe6lWhMBMhLl5ZRDWBwp9MOJJ/bGkCqObPvhBEeQ3vOzOmCDk8juCh5Lu9XPyS 9zMS9hg5qAiA+9cftyQinyKsWhQzUnh3wffyHhKz1hEmYkMa 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/a4000t.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/a4000t.c b/drivers/scsi/a4000t.c index 5e575afce134..e435fc06a624 100644 --- a/drivers/scsi/a4000t.c +++ b/drivers/scsi/a4000t.c @@ -95,7 +95,7 @@ static int __init amiga_a4000t_scsi_probe(struct platform_device *pdev) return -ENODEV; } -static int __exit amiga_a4000t_scsi_remove(struct platform_device *pdev) +static void __exit amiga_a4000t_scsi_remove(struct platform_device *pdev) { struct Scsi_Host *host = platform_get_drvdata(pdev); struct NCR_700_Host_Parameters *hostdata = shost_priv(host); @@ -106,11 +106,10 @@ static int __exit amiga_a4000t_scsi_remove(struct platform_device *pdev) kfree(hostdata); free_irq(host->irq, host); release_mem_region(res->start, resource_size(res)); - return 0; } static struct platform_driver amiga_a4000t_scsi_driver = { - .remove = __exit_p(amiga_a4000t_scsi_remove), + .remove_new = __exit_p(amiga_a4000t_scsi_remove), .driver = { .name = "amiga-a4000t-scsi", },