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Niedermayr" To: , CC: , , , Subject: [PATCH v3 1/3] memory: omap-gpmc: allow shared wait pins Date: Tue, 6 Sep 2022 14:47:43 +0200 Message-ID: <20220906124747.1767318-2-benedikt.niedermayr@siemens.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220906124747.1767318-1-benedikt.niedermayr@siemens.com> References: <20220906124747.1767318-1-benedikt.niedermayr@siemens.com> MIME-Version: 1.0 X-Originating-IP: [139.23.126.196] X-ClientProxiedBy: DEMCHDC89XA.ad011.siemens.net (139.25.226.103) To DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: e806a05b-949c-4f45-abdb-08da90060677 X-MS-TrafficTypeDiagnostic: VE1PR10MB3887:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:194.138.21.75; CTRY:DE; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:hybrid.siemens.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230016)(4636009)(39860400002)(136003)(396003)(346002)(376002)(40470700004)(46966006)(36840700001)(40480700001)(26005)(86362001)(82310400005)(41300700001)(478600001)(82960400001)(6666004)(356005)(2616005)(40460700003)(81166007)(83380400001)(82740400003)(336012)(47076005)(186003)(956004)(16526019)(36860700001)(2906002)(316002)(110136005)(4326008)(8676002)(70206006)(70586007)(54906003)(36756003)(1076003)(5660300002)(8936002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Sep 2022 12:47:57.7962 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e806a05b-949c-4f45-abdb-08da90060677 X-MS-Exchange-CrossTenant-Id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=38ae3bcd-9579-4fd4-adda-b42e1495d55a; Ip=[194.138.21.75]; Helo=[hybrid.siemens.com] X-MS-Exchange-CrossTenant-AuthSource: HE1EUR01FT037.eop-EUR01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VE1PR10MB3887 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From: Benedikt Niedermayr Newer kernels refuse to probe when using the same wait pin for different chipselect regions. But this may be a usecase when connecting for example FPGA or ASIC modules to the gpmc, which only got one wait pin installed. Signed-off-by: Benedikt Niedermayr --- drivers/memory/omap-gpmc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c index d9bf1c2ac319..e3674a15b934 100644 --- a/drivers/memory/omap-gpmc.c +++ b/drivers/memory/omap-gpmc.c @@ -2221,9 +2221,13 @@ static int gpmc_probe_generic_child(struct platform_device *pdev, GPIO_ACTIVE_HIGH, GPIOD_IN); if (IS_ERR(waitpin_desc)) { - dev_err(&pdev->dev, "invalid wait-pin: %d\n", wait_pin); ret = PTR_ERR(waitpin_desc); - goto err; + if (ret == -EBUSY) { + dev_info(&pdev->dev, "shared wait-pin: %d\n", wait_pin); + } else { + dev_err(&pdev->dev, "invalid wait-pin: %d\n", wait_pin); + goto err; + } } }