From patchwork Tue Aug 1 11:02:38 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: 13336498 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9509BC001DF for ; Tue, 1 Aug 2023 11:03:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AAE3F10E3D9; Tue, 1 Aug 2023 11:03:02 +0000 (UTC) Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by gabe.freedesktop.org (Postfix) with ESMTPS id CC35710E3BC for ; Tue, 1 Aug 2023 11:03:00 +0000 (UTC) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qQn9K-0006gE-Oo; Tue, 01 Aug 2023 13:02:46 +0200 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1qQn9I-000MZL-W7; Tue, 01 Aug 2023 13:02:45 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qQn9I-009bbg-B2; Tue, 01 Aug 2023 13:02:44 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: David Airlie , Daniel Vetter , Orson Zhai , Baolin Wang , Chunyan Zhang , Sam Ravnborg , Thomas Zimmermann , Liviu Dudau , Laurent Pinchart , Danilo Krummrich , Deepak R Varma , Rob Herring , Steven Price , Thierry Reding , Jani Nikula , Jyri Sarha Subject: [PATCH v2 11/12] drm/sprd: Convert to platform remove callback returning void Date: Tue, 1 Aug 2023 13:02:38 +0200 Message-Id: <20230801110239.831099-12-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230801110239.831099-1-u.kleine-koenig@pengutronix.de> References: <20230801110239.831099-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3420; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=arbQuMb9VgivfA81jG0Rml7nKD7fQkRc8kbNMt1pbBk=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkyOXA13g6xno6rr42s7pRZqBqeWCRpDrqrmnlD zPbjRyPc+WJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZMjlwAAKCRCPgPtYfRL+ Tl2JB/0dwESBpXlQnsSBKxO4cnJRXDMqsHZk6hrf0wvMj/4O76b6U9QJ3WrZk4Sy7QPdvCdvChQ ELRA/tDF1/0fPLQwljuYAqo/Ql8ME39x9wcSWirPW7HdHUG4/CqY3K12D4viqH4FcunPsbaSzgv r4p+1BLJIFSTCMfOzPydFsnYjTf4FE4mb5IsGMJKY9+BKMg7JNJGBOB+djnosgVOpjlzaNMh77W VajvXIKGbQHH7N4gIwNhzNodLKA6AvxSzGqNbseLCbALx8PZiajXDvkS61K9ODrcXqunUMiI1WD hcXvBTgmVJPX6I3Hh0p8y+6ooUku6c+I0QLa1wRvDakmKWHM 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: dri-devel@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel@pengutronix.de, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 (mostly) ignored 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. Trivially convert the sprd drm drivers from always returning zero in the remove callback to the void returning variant. Reviewed-by: Thomas Zimmermann Reviewed-by: Jyri Sarha Signed-off-by: Uwe Kleine-König --- drivers/gpu/drm/sprd/sprd_dpu.c | 6 ++---- drivers/gpu/drm/sprd/sprd_drm.c | 5 ++--- drivers/gpu/drm/sprd/sprd_dsi.c | 6 ++---- 3 files changed, 6 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/sprd/sprd_dpu.c b/drivers/gpu/drm/sprd/sprd_dpu.c index 48183bbd0590..deb3bb96e2a8 100644 --- a/drivers/gpu/drm/sprd/sprd_dpu.c +++ b/drivers/gpu/drm/sprd/sprd_dpu.c @@ -859,16 +859,14 @@ static int sprd_dpu_probe(struct platform_device *pdev) return component_add(&pdev->dev, &dpu_component_ops); } -static int sprd_dpu_remove(struct platform_device *pdev) +static void sprd_dpu_remove(struct platform_device *pdev) { component_del(&pdev->dev, &dpu_component_ops); - - return 0; } struct platform_driver sprd_dpu_driver = { .probe = sprd_dpu_probe, - .remove = sprd_dpu_remove, + .remove_new = sprd_dpu_remove, .driver = { .name = "sprd-dpu-drv", .of_match_table = dpu_match_table, diff --git a/drivers/gpu/drm/sprd/sprd_drm.c b/drivers/gpu/drm/sprd/sprd_drm.c index 0aa39156f2fa..a74cd0caf645 100644 --- a/drivers/gpu/drm/sprd/sprd_drm.c +++ b/drivers/gpu/drm/sprd/sprd_drm.c @@ -138,10 +138,9 @@ static int sprd_drm_probe(struct platform_device *pdev) return drm_of_component_probe(&pdev->dev, component_compare_of, &drm_component_ops); } -static int sprd_drm_remove(struct platform_device *pdev) +static void sprd_drm_remove(struct platform_device *pdev) { component_master_del(&pdev->dev, &drm_component_ops); - return 0; } static void sprd_drm_shutdown(struct platform_device *pdev) @@ -164,7 +163,7 @@ MODULE_DEVICE_TABLE(of, drm_match_table); static struct platform_driver sprd_drm_driver = { .probe = sprd_drm_probe, - .remove = sprd_drm_remove, + .remove_new = sprd_drm_remove, .shutdown = sprd_drm_shutdown, .driver = { .name = "sprd-drm-drv", diff --git a/drivers/gpu/drm/sprd/sprd_dsi.c b/drivers/gpu/drm/sprd/sprd_dsi.c index d7b143a75601..0b69c140eab3 100644 --- a/drivers/gpu/drm/sprd/sprd_dsi.c +++ b/drivers/gpu/drm/sprd/sprd_dsi.c @@ -1051,18 +1051,16 @@ static int sprd_dsi_probe(struct platform_device *pdev) return mipi_dsi_host_register(&dsi->host); } -static int sprd_dsi_remove(struct platform_device *pdev) +static void sprd_dsi_remove(struct platform_device *pdev) { struct sprd_dsi *dsi = dev_get_drvdata(&pdev->dev); mipi_dsi_host_unregister(&dsi->host); - - return 0; } struct platform_driver sprd_dsi_driver = { .probe = sprd_dsi_probe, - .remove = sprd_dsi_remove, + .remove_new = sprd_dsi_remove, .driver = { .name = "sprd-dsi-drv", .of_match_table = dsi_match_table,