From patchwork Wed Apr 10 14:05:48 2024 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: 13624626 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37C4B15EFBD for ; Wed, 10 Apr 2024 14:05:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712757960; cv=none; b=tyxIyZUg3gqYay11kDRa6NjA2KlKbQfRdlZCenaQ7z+rOqOQRI9Y0PB6KFqiz2gsJvJmCliEFF2LLjNzumW31WPnwNGfNDnTSJfroRqtJpPNs5sDZbMPJ626LLuMaGSpz+h72aSIr0++ShtftxC2BpylVgpJBxjhWvi9+ggNECs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712757960; c=relaxed/simple; bh=21Ve1Bd2bxZcQ2r8/M48JFMLT9OT3eTRNvl2PwLQgic=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=O4VPjzIzGK6CGtVw/efENCRvQpFpqCwDPkQaUxFm2zQE7qh/Ua7jrvkqEiSjImcSFojn6tVs3RNGniwlhCvRMc3vZ87Jb6IlvHKwl8Z7DWog3J81fkjfKRAkPxne3O6SGb/aD5AgVB+K/PDmKoMCDKwqmL4MlfQXuUv/Xti6hl4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de 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 1ruYaJ-0000R1-7i; Wed, 10 Apr 2024 16:05:55 +0200 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 1ruYaI-00BVS0-Pl; Wed, 10 Apr 2024 16:05:54 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1ruYaI-00Hb2i-2J; Wed, 10 Apr 2024 16:05:54 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Maxim Levitsky , Alex Dubov , Ulf Hansson Cc: linux-mmc@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 1/3] memstick: rtsx_pci_ms: Drop if block with always false condition Date: Wed, 10 Apr 2024 16:05:48 +0200 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=941; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=21Ve1Bd2bxZcQ2r8/M48JFMLT9OT3eTRNvl2PwLQgic=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBmFpy9tgb9rifsC8wcA/UUzgaL/zKJNwuiY1x2W CO5zaubRdKJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZhacvQAKCRCPgPtYfRL+ ThvxB/9DjZ59T3zvcHXg/KFKN0ZSgMe4qX6fqSNrwiNlDNNr0EYY+lh32E4mH30Ju/XSRV8LiJp vmI/L7GlHHv+ANC3Yz1sdIZ2cUBF89t+j5bCdAqAUQryB34bc7P0UHdoX7pf2fxI34uGDb27L41 1vNQU8DbsbcboOl15vxZX20C+az7PItle7mIfIzujNMO6PiM9bcdayokyLputbM8Mx+0TyytY2S Kg/zA9d8FRmR2oaDgMzemH8Fks4Zr1otardtU8MceMK+3Y8nONttFAGlpxCe1t+nMH4dQ6qPQzg 7OIPjCg4DFHdVpXGSVUPIHgO/NSfC3NZ88LNpgAt2J3drWR/ 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-mmc@vger.kernel.org rtsx_pci_ms_drv_remove() is only called after rtsx_pci_ms_drv_probe() completed successfully. In this case platform_set_drvdata() was called with a non-NULL argument and so platform_get_drvdata() won't return NULL. Simplify by removing the if block with the always false condition. Signed-off-by: Uwe Kleine-König --- drivers/memstick/host/rtsx_pci_ms.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/memstick/host/rtsx_pci_ms.c b/drivers/memstick/host/rtsx_pci_ms.c index 15720a4afac2..7c6dba6de230 100644 --- a/drivers/memstick/host/rtsx_pci_ms.c +++ b/drivers/memstick/host/rtsx_pci_ms.c @@ -581,9 +581,6 @@ static int rtsx_pci_ms_drv_remove(struct platform_device *pdev) struct memstick_host *msh; int rc; - if (!host) - return 0; - pcr = host->pcr; pcr->slots[RTSX_MS_CARD].p_dev = NULL; pcr->slots[RTSX_MS_CARD].card_event = NULL; From patchwork Wed Apr 10 14:05:49 2024 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: 13624629 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AD4E115B0F4 for ; Wed, 10 Apr 2024 14:05:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712757961; cv=none; b=uVBSBmCm/FgX2lIBFG+hHvOA8aMxdSzGl9cdKZJaeM8kADnr4IjDAKFkStjkHdS9AxjIaqRHZYp4MiWO05Fp5S3hLMJ0rC7cc0gtiB11QuZD/ppsaMuekXmWoDkNRtaIkdHaCtT0z3pD8SZMel7YTEvkkZetE7JRejyE/XqvWTE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712757961; c=relaxed/simple; bh=XI760DIC4FylZDpPbaZopO349gmj/Vp0j2N5bhLPphs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=jLPZKx+EtwODBPXeMbuUKOU0+5n6uLu3KBzGQuziJGCwHFegwJqVRQHr3EE1Lb6eE6jBqmNcIrsAkjsfM7dyO8tANlpCGMunKvEysGeu+WJluxEPJi94c4fWWFiK+mdwDcTxH1PHMlt/PDRufbTbeytjja3FzXnZJVea7IPSyxY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de 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 1ruYaJ-0000R2-BY; Wed, 10 Apr 2024 16:05:55 +0200 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 1ruYaI-00BVS3-Ux; Wed, 10 Apr 2024 16:05:54 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1ruYaI-00Hb2m-2q; Wed, 10 Apr 2024 16:05:54 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Maxim Levitsky , Alex Dubov , Ulf Hansson Cc: linux-mmc@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 2/3] memstick: rtsx_pci_ms: Convert to platform remove callback returning void Date: Wed, 10 Apr 2024 16:05:49 +0200 Message-ID: <512d6b6a4d3b8a02cee28635a936340f5f70c65e.1712757795.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2012; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=XI760DIC4FylZDpPbaZopO349gmj/Vp0j2N5bhLPphs=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBmFpy+n6Jff9g1M4g3mKm7blKpqcpLouhLiEtYR fT2DhU3C/WJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZhacvgAKCRCPgPtYfRL+ TiOcB/0c1uDyb9XLhJx7XmWXxihH5+gu1gYICvPcPXM0N/s4yOdKFje9Y8uRM4vpdGKKAkmdVIR eN6Niywx/hJDZvdXGcf3fsXaJ1nsybRU7zurUXqJ79WGaBbIpGGpTB7tquFsRIFr8UfpRxJJjQO ggzuWJ+fbb4aStgYYgtgQ7rGYjIuLY67NH05sA9LE7Zt1fPyS1pbIrCa8rMyKAWgr7QShKGz8Dm WWGRFOqApamr/HggJz9Fp57e5HPM3/M04jONwlCs4q655jy94IsynbDlPqfbUgX6NnERlNnJQWG UeYAl3AoYjpP2lmN5FjcnNQPt6KvY6JRoKu/4/ivbZiW+p06 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-mmc@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(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König --- drivers/memstick/host/rtsx_pci_ms.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/memstick/host/rtsx_pci_ms.c b/drivers/memstick/host/rtsx_pci_ms.c index 7c6dba6de230..980a54513e6c 100644 --- a/drivers/memstick/host/rtsx_pci_ms.c +++ b/drivers/memstick/host/rtsx_pci_ms.c @@ -574,7 +574,7 @@ static int rtsx_pci_ms_drv_probe(struct platform_device *pdev) return 0; } -static int rtsx_pci_ms_drv_remove(struct platform_device *pdev) +static void rtsx_pci_ms_drv_remove(struct platform_device *pdev) { struct realtek_pci_ms *host = platform_get_drvdata(pdev); struct rtsx_pcr *pcr; @@ -610,8 +610,6 @@ static int rtsx_pci_ms_drv_remove(struct platform_device *pdev) dev_dbg(&(pdev->dev), ": Realtek PCI-E Memstick controller has been removed\n"); - - return 0; } static struct platform_device_id rtsx_pci_ms_ids[] = { @@ -625,7 +623,7 @@ MODULE_DEVICE_TABLE(platform, rtsx_pci_ms_ids); static struct platform_driver rtsx_pci_ms_driver = { .probe = rtsx_pci_ms_drv_probe, - .remove = rtsx_pci_ms_drv_remove, + .remove_new = rtsx_pci_ms_drv_remove, .id_table = rtsx_pci_ms_ids, .suspend = rtsx_pci_ms_suspend, .resume = rtsx_pci_ms_resume, From patchwork Wed Apr 10 14:05:50 2024 Content-Type: text/plain; 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Wed, 10 Apr 2024 16:05:55 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1ruYaJ-00Hb2q-0F; Wed, 10 Apr 2024 16:05:55 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Maxim Levitsky , Alex Dubov , Ulf Hansson Cc: linux-mmc@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 3/3] memstick: rtsx_usb_ms: Convert to platform remove callback returning void Date: Wed, 10 Apr 2024 16:05:50 +0200 Message-ID: <80969cc7c08c613753bdf2270304983ed0dcc2a0.1712757795.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2037; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=ZjzPv6oCLgl1A0ga41DPf8do2ngSUhwX7c27dENo/qY=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBmFpy/cQ6HEdbvnLyMZ1nr3irRwNmI8b57pyBqo HpptUlVN3CJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZhacvwAKCRCPgPtYfRL+ TvilCACMNGg0SmkbkjV9TMxTQJ+pjyv/97MDmqgfFM1jjdZb3tVgxp7cS1G8u31vf8xFXIR+CGv 3eUSbGrl7TqOfcuwSzwaFe4Jja7elC5yuWg9n4QnTPNUtUKWYgwpUi8J/HKo58RtehpkhISrY1r aVAwlRFSIoVFvanV3JjMmrg1U9TCjsgdPAO9xv0ewrq9AKuwlIcsD1CgkKr4pDDRbr6j0DEatJ1 v+0vVTq3WIwNJnLifca+bZL7rBBn3fp2MFMua3zK4k0LVjJUdjL8BZw1hbPZH6wEb/WoXdNT6nD AOScDZP5YdJEEb4irqJX8DTG75VbVfn5lGuABs3sPyDVLceM 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-mmc@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(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König --- drivers/memstick/host/rtsx_usb_ms.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/memstick/host/rtsx_usb_ms.c b/drivers/memstick/host/rtsx_usb_ms.c index 29271ad4728a..246876ac713c 100644 --- a/drivers/memstick/host/rtsx_usb_ms.c +++ b/drivers/memstick/host/rtsx_usb_ms.c @@ -805,7 +805,7 @@ static int rtsx_usb_ms_drv_probe(struct platform_device *pdev) return err; } -static int rtsx_usb_ms_drv_remove(struct platform_device *pdev) +static void rtsx_usb_ms_drv_remove(struct platform_device *pdev) { struct rtsx_usb_ms *host = platform_get_drvdata(pdev); struct memstick_host *msh = host->msh; @@ -840,8 +840,6 @@ static int rtsx_usb_ms_drv_remove(struct platform_device *pdev) ": Realtek USB Memstick controller has been removed\n"); memstick_free_host(msh); platform_set_drvdata(pdev, NULL); - - return 0; } static struct platform_device_id rtsx_usb_ms_ids[] = { @@ -855,7 +853,7 @@ MODULE_DEVICE_TABLE(platform, rtsx_usb_ms_ids); static struct platform_driver rtsx_usb_ms_driver = { .probe = rtsx_usb_ms_drv_probe, - .remove = rtsx_usb_ms_drv_remove, + .remove_new = rtsx_usb_ms_drv_remove, .id_table = rtsx_usb_ms_ids, .driver = { .name = "rtsx_usb_ms",