From patchwork Sun Jan 23 17:51:57 2022 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: 534353 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0526CC433FE for ; Sun, 23 Jan 2022 17:52:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239356AbiAWRwT (ORCPT ); Sun, 23 Jan 2022 12:52:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42714 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239350AbiAWRwQ (ORCPT ); Sun, 23 Jan 2022 12:52:16 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35463C06173D for ; Sun, 23 Jan 2022 09:52:16 -0800 (PST) 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 1nBh29-0007aE-Qo; Sun, 23 Jan 2022 18:52:09 +0100 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 1nBh28-00BycB-7D; Sun, 23 Jan 2022 18:52:07 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1nBh26-000tzX-Kp; Sun, 23 Jan 2022 18:52:06 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Mark Brown Cc: linux-spi@vger.kernel.org, kernel@pengutronix.de, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , linux-fbdev@vger.kernel.org, Noralf Tronnes , linux-staging@lists.linux.dev, dri-devel@lists.freedesktop.org, Thomas Petazzoni , Heiner Kallweit Subject: [PATCH 1/5] staging: fbtft: Fix error path in fbtft_driver_module_init() Date: Sun, 23 Jan 2022 18:51:57 +0100 Message-Id: <20220123175201.34839-2-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220123175201.34839-1-u.kleine-koenig@pengutronix.de> References: <20220123175201.34839-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1472; h=from:subject; bh=i2X5yNCIOCOFDIMQl+gbf/QxZ3EJl4WBdI8+Ry87svQ=; b=owEBbQGS/pANAwAKAcH8FHityuwJAcsmYgBh7ZWrOh19itJwy3A6u3yWbUTSiEplUaCg/AdalVp/ 1dxUs4SJATMEAAEKAB0WIQR+cioWkBis/z50pAvB/BR4rcrsCQUCYe2VqwAKCRDB/BR4rcrsCcnVCA CGzmOKybWQk3bG9qPzyrR4sinHLhsqEKAvXaLEm5q8uy0OpszNQ7nW1a0QM6JkRi3oCfPUu6EgwGl0 Te30YS0YHfiZzBt2r5ajXFNJChzYJwr2BcogYA4ep+/F6Y4S2zkX/zZ7rAeh4qRPXj1A5SyHvrSvTW wMihZM7kIOX4GbOy++5PGjG/Bojb0MFgVoHuEemX7mkjQ4FEE0kYBDL1+FY4yVAnn8NrTGg2EyFbRY ePWfgrh5brbPbyibSbwh5Uxp5xLiE9CP6vNZzvhGjCSb7CpGAls8G/l1H7743sjHSdn2gBreuYrocS 6AFKf/IGRfm3gnK8hvjx9Oz1/2Db27 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: linux-fbdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org If registering the platform driver fails, the function must not return without undoing the spi driver registration first. Fixes: c296d5f9957c ("staging: fbtft: core support") Link: https://lore.kernel.org/r/20220118181338.207943-1-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König --- drivers/staging/fbtft/fbtft.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h index 4cdec34e23d2..55677efc0138 100644 --- a/drivers/staging/fbtft/fbtft.h +++ b/drivers/staging/fbtft/fbtft.h @@ -334,7 +334,10 @@ static int __init fbtft_driver_module_init(void) \ ret = spi_register_driver(&fbtft_driver_spi_driver); \ if (ret < 0) \ return ret; \ - return platform_driver_register(&fbtft_driver_platform_driver); \ + ret = platform_driver_register(&fbtft_driver_platform_driver); \ + if (ret < 0) \ + spi_unregister_driver(&fbtft_driver_spi_driver); \ + return ret; \ } \ \ static void __exit fbtft_driver_module_exit(void) \ From patchwork Sun Jan 23 17:51:58 2022 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: 536654 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D5DF0C433F5 for ; Sun, 23 Jan 2022 17:52:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232441AbiAWRwT (ORCPT ); Sun, 23 Jan 2022 12:52:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42712 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239351AbiAWRwQ (ORCPT ); Sun, 23 Jan 2022 12:52:16 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F2EBC06173B for ; Sun, 23 Jan 2022 09:52:16 -0800 (PST) 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 1nBh29-0007aF-Qo; Sun, 23 Jan 2022 18:52:09 +0100 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 1nBh28-00BycG-BF; Sun, 23 Jan 2022 18:52:07 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1nBh26-000tza-R3; Sun, 23 Jan 2022 18:52:06 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Mark Brown Cc: linux-spi@vger.kernel.org, kernel@pengutronix.de, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , linux-fbdev@vger.kernel.org, Noralf Tronnes , linux-staging@lists.linux.dev, dri-devel@lists.freedesktop.org, Thomas Petazzoni , Heiner Kallweit Subject: [PATCH 2/5] staging: fbtft: Deduplicate driver registration macros Date: Sun, 23 Jan 2022 18:51:58 +0100 Message-Id: <20220123175201.34839-3-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220123175201.34839-1-u.kleine-koenig@pengutronix.de> References: <20220123175201.34839-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=6082; h=from:subject; bh=foBmuuEI1He7NuGg3QW3ixnzXwI1LphRcPTFGI3t6X8=; b=owEBbQGS/pANAwAKAcH8FHityuwJAcsmYgBh7ZWvvuKPqNnlGxkliBrLUAPrmqBmyjgXYcMtZRKf /OdSJuKJATMEAAEKAB0WIQR+cioWkBis/z50pAvB/BR4rcrsCQUCYe2VrwAKCRDB/BR4rcrsCQKdB/ 9sBcrdFWuKD0qO5mR5tfx7V99RsL9sa3essPy4tP8F1zgmNlTI+c/J1M7jmBWqkVi++cVYuMXpmSIK KiijgTxGBFHiLiYNjgP/fAymP0jHYKH3wHWWfclIN2e7gfhCsgrxEQU7NTtYMvn95rqgxunuYQiTGl CmlZHDzsSpxAmVUxWcnc8FUi8nrO6LYKp+UR6y47c1RxsmBBvys/7eJKwR+1kgueeeD2grtULKWqgr 5QIF0deXNH1uj85z3vf93rT/L/0zWIWiCtgM34u6J39dCh5X2T2jjtorNcYMs+2Dj7oNLfss3CFi9G /KRKOrig0xxNdVmMyl6neeSDKdjmJF 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: linux-fbdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org The two macros FBTFT_REGISTER_DRIVER and FBTFT_REGISTER_SPI_DRIVER contain quite some duplication: Both define an spi driver and an of device table and the differences are quite subtle. So create two new macros and use both twice. Link: https://lore.kernel.org/r/20220118181338.207943-2-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König --- drivers/staging/fbtft/fbtft.h | 93 ++++++++++++++--------------------- 1 file changed, 36 insertions(+), 57 deletions(-) diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h index 55677efc0138..6a7545b5bcd2 100644 --- a/drivers/staging/fbtft/fbtft.h +++ b/drivers/staging/fbtft/fbtft.h @@ -272,21 +272,40 @@ void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...); void fbtft_write_reg16_bus8(struct fbtft_par *par, int len, ...); void fbtft_write_reg16_bus16(struct fbtft_par *par, int len, ...); +#define FBTFT_DT_TABLE(_compatible) \ +static const struct of_device_id dt_ids[] = { \ + { .compatible = _compatible }, \ + {}, \ +}; \ +MODULE_DEVICE_TABLE(of, dt_ids); + +#define FBTFT_SPI_DRIVER(_name, _compatible, _display, _spi_ids) \ + \ +static int fbtft_driver_probe_spi(struct spi_device *spi) \ +{ \ + return fbtft_probe_common(_display, spi, NULL); \ +} \ + \ +static int fbtft_driver_remove_spi(struct spi_device *spi) \ +{ \ + struct fb_info *info = spi_get_drvdata(spi); \ + \ + fbtft_remove_common(&spi->dev, info); \ + return 0; \ +} \ + \ +static struct spi_driver fbtft_driver_spi_driver = { \ + .driver = { \ + .name = _name, \ + .of_match_table = dt_ids, \ + }, \ + .id_table = _spi_ids, \ + .probe = fbtft_driver_probe_spi, \ + .remove = fbtft_driver_remove_spi, \ +}; + #define FBTFT_REGISTER_DRIVER(_name, _compatible, _display) \ \ -static int fbtft_driver_probe_spi(struct spi_device *spi) \ -{ \ - return fbtft_probe_common(_display, spi, NULL); \ -} \ - \ -static int fbtft_driver_remove_spi(struct spi_device *spi) \ -{ \ - struct fb_info *info = spi_get_drvdata(spi); \ - \ - fbtft_remove_common(&spi->dev, info); \ - return 0; \ -} \ - \ static int fbtft_driver_probe_pdev(struct platform_device *pdev) \ { \ return fbtft_probe_common(_display, NULL, pdev); \ @@ -300,22 +319,9 @@ static int fbtft_driver_remove_pdev(struct platform_device *pdev) \ return 0; \ } \ \ -static const struct of_device_id dt_ids[] = { \ - { .compatible = _compatible }, \ - {}, \ -}; \ - \ -MODULE_DEVICE_TABLE(of, dt_ids); \ +FBTFT_DT_TABLE(_compatible) \ \ - \ -static struct spi_driver fbtft_driver_spi_driver = { \ - .driver = { \ - .name = _name, \ - .of_match_table = dt_ids, \ - }, \ - .probe = fbtft_driver_probe_spi, \ - .remove = fbtft_driver_remove_spi, \ -}; \ +FBTFT_SPI_DRIVER(_name, _compatible, _display, NULL) \ \ static struct platform_driver fbtft_driver_platform_driver = { \ .driver = { \ @@ -351,42 +357,15 @@ module_exit(fbtft_driver_module_exit); #define FBTFT_REGISTER_SPI_DRIVER(_name, _comp_vend, _comp_dev, _display) \ \ -static int fbtft_driver_probe_spi(struct spi_device *spi) \ -{ \ - return fbtft_probe_common(_display, spi, NULL); \ -} \ - \ -static int fbtft_driver_remove_spi(struct spi_device *spi) \ -{ \ - struct fb_info *info = spi_get_drvdata(spi); \ - \ - fbtft_remove_common(&spi->dev, info); \ - return 0; \ -} \ - \ -static const struct of_device_id dt_ids[] = { \ - { .compatible = _comp_vend "," _comp_dev }, \ - {}, \ -}; \ - \ -MODULE_DEVICE_TABLE(of, dt_ids); \ +FBTFT_DT_TABLE(_comp_vend "," _comp_dev) \ \ static const struct spi_device_id spi_ids[] = { \ { .name = _comp_dev }, \ {}, \ }; \ - \ MODULE_DEVICE_TABLE(spi, spi_ids); \ \ -static struct spi_driver fbtft_driver_spi_driver = { \ - .driver = { \ - .name = _name, \ - .of_match_table = dt_ids, \ - }, \ - .id_table = spi_ids, \ - .probe = fbtft_driver_probe_spi, \ - .remove = fbtft_driver_remove_spi, \ -}; \ +FBTFT_SPI_DRIVER(_name, _comp_vend "," _comp_dev, _display, spi_ids) \ \ module_spi_driver(fbtft_driver_spi_driver);