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Tue, 12 Aug 2025 06:39:57 -0700 From: David Thompson To: , , , CC: , , "David Thompson" , Subject: [PATCH v2 1/2] Revert "gpio: mlxbf3: only get IRQ for device instance 0" Date: Tue, 12 Aug 2025 09:39:51 -0400 Message-ID: <8d9d9d6beb0b2785e3a4d75662f585e28dfba8df.1755005277.git.davthompson@nvidia.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS2PEPF00003447:EE_|BL4PR12MB9535:EE_ X-MS-Office365-Filtering-Correlation-Id: 3c7341f7-f800-4d2c-f6fc-08ddd9a5c34d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|376014|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?0g3f53t+agVVgOqxZhn8t9aE+e+hFBTRqvhH4jxAwQ0pt8OxZv71/wzjIxwp?= =?us-ascii?Q?7g3zQrR8s5e+vbQN7eGlJkISKbSqbkEwlDDah1DlSfAEzkLQ8aaX7olkLQvd?= =?us-ascii?Q?5rt+E6qFC4czjICZsRrVDubjQOwI6vwk1IiK8CIrOYRV/yl3+6JgXITZBuZS?= =?us-ascii?Q?C+w7Bl/fvQ0snkyXis0oSIcSiD3bmfwu5FnzRoSIAECFKf0QQnkvrezB84jF?= =?us-ascii?Q?07uYUXR7pXmrhX9byOmtUNItB6k6qltOBN++vL5ev5PaRqJkzx8GXBHinqZz?= =?us-ascii?Q?H0L9fS2EGgWx5xvhmAM6cH0IUuR4Ab31cHZs4PJ+joMCFjOA175LB2KRej7o?= =?us-ascii?Q?HcDya7efJiCham/tsAy33VExl9gYHtO1ao6aofczo7/XnkeJGx4GzxraaaGq?= =?us-ascii?Q?ub/7dcxk4LKhJHY3xPuVtm5ChDNw4qbRlzTkL4Uyh7iccDmHwlcy0NejW0Aa?= =?us-ascii?Q?z4asJ9DY0B/2o64xW8+SeViPNjwhoSsxx6sQqh5mrgMIw0pSPAqI5q35AUCO?= =?us-ascii?Q?fAtuZ5Rt9j0Qh3ngmLiIbxxRtaMYphTp47fF+I5xGlqAwLcLH7baOM6aBY7v?= =?us-ascii?Q?2Dm/y5n3HkLjF/OXFCcoRKS+qE8YwBuqv85jszlsNWjhJ9k8T/0q6r1k1HU9?= =?us-ascii?Q?Wmrapk2kPP8cCcoG5Rno/G/OhDLFGCWsp3bhA2S0aSG+Ph2WVezR/mYLqHvz?= =?us-ascii?Q?jEeN5C5SMQKiJXhtmRMW2ZuwtKLni1U5nwYblYv4SPOh+gYH+mNgJAMU8BNN?= =?us-ascii?Q?xjNQduetu9CJEwff4Xsd9fpJi5fAYnK9teaSZt/HaF8jOnqmzgoMVD23HpFV?= =?us-ascii?Q?N4Non7vTvSmFKl2G/dnWNKDBiLNSsE0mn/recULWATHZKDqMQyGsc30CFO2g?= =?us-ascii?Q?kenm830duxrWhRTLjetdoDEanEY2Xk18blaN0MImUJ4eJMdWPgLtPXQ0gL7Y?= =?us-ascii?Q?chS5HtEprHSBgufjC9XZ9ILdIc1TF19gKFx63jEjzNFqwNqZ2JyA274GjMFs?= =?us-ascii?Q?MWwvbvdfiQjSMDFBqTVim1/0mNiWA4OrSU5wnl79fLBnA2XonLklWjd7hkKP?= =?us-ascii?Q?IZq1RZjerEdBqJX2lfPRtybqTzMpeSc/YPZ28sYnocbxJCPBoW6vOfBHuaQo?= =?us-ascii?Q?sYbd0JiWAy//QG5jbI+CWyepQdpD9gJT0DvvyEbdOmGVd+39JYsb2xQv41dB?= =?us-ascii?Q?DHS/oGmmsKeTy6qLCuLPj2NdDQadR82Si2db0iju13b9YOOjA2wfUbre7yy7?= =?us-ascii?Q?zrcw1UK+S3gMYea6MCMjCQJYBtpH3J8p9B32EDfkqigfEkhId4NC6gI5H7CI?= =?us-ascii?Q?spKYKnZI3KLE2azaP1PBM83WecqgKNGAyYjOUsyw5Y8X9GE56GSRgldmsU0D?= =?us-ascii?Q?NNgpxm6byjMJmC9WZC7YfZiyyTKBobnTgBddq6o8UhzoDGXu3Igw0461Z7Vg?= =?us-ascii?Q?tAc3+QHrwQEsqDKRBgKv9APj2wSvoRzxrvHeEs5u7fxxpq64X5fSzTKf1VnO?= =?us-ascii?Q?8Hzw3WIHTNvt9f3QShCf3CX5ZLa8OTCAsXNh?= X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(82310400026)(1800799024)(376014)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Aug 2025 13:40:12.4523 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3c7341f7-f800-4d2c-f6fc-08ddd9a5c34d X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS2PEPF00003447.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL4PR12MB9535 Content-Type: text/plain; charset="utf-8" This reverts commit 10af0273a35ab4513ca1546644b8c853044da134. While this change was merged, it is not the preferred solution. During review of a similar change to the gpio-mlxbf2 driver, the use of "platform_get_irq_optional" was identified as the preferred solution, so let's use it for gpio-mlxbf3 driver as well. Cc: stable@vger.kernel.org Fixes: 10af0273a35a ("gpio: mlxbf3: only get IRQ for device instance 0") Signed-off-by: David Thompson Reviewed-by: Andy Shevchenko --- drivers/gpio/gpio-mlxbf3.c | 54 ++++++++++++++------------------------ 1 file changed, 19 insertions(+), 35 deletions(-) diff --git a/drivers/gpio/gpio-mlxbf3.c b/drivers/gpio/gpio-mlxbf3.c index 9875e34bde72..10ea71273c89 100644 --- a/drivers/gpio/gpio-mlxbf3.c +++ b/drivers/gpio/gpio-mlxbf3.c @@ -190,9 +190,7 @@ static int mlxbf3_gpio_probe(struct platform_device *pd= ev) struct mlxbf3_gpio_context *gs; struct gpio_irq_chip *girq; struct gpio_chip *gc; - char *colon_ptr; int ret, irq; - long num; =20 gs =3D devm_kzalloc(dev, sizeof(*gs), GFP_KERNEL); if (!gs) @@ -229,39 +227,25 @@ static int mlxbf3_gpio_probe(struct platform_device *= pdev) gc->owner =3D THIS_MODULE; gc->add_pin_ranges =3D mlxbf3_gpio_add_pin_ranges; =20 - colon_ptr =3D strchr(dev_name(dev), ':'); - if (!colon_ptr) { - dev_err(dev, "invalid device name format\n"); - return -EINVAL; - } - - ret =3D kstrtol(++colon_ptr, 16, &num); - if (ret) { - dev_err(dev, "invalid device instance\n"); - return ret; - } - - if (!num) { - irq =3D platform_get_irq(pdev, 0); - if (irq >=3D 0) { - girq =3D &gs->gc.irq; - gpio_irq_chip_set_chip(girq, &gpio_mlxbf3_irqchip); - girq->default_type =3D IRQ_TYPE_NONE; - /* This will let us handle the parent IRQ in the driver */ - girq->num_parents =3D 0; - girq->parents =3D NULL; - girq->parent_handler =3D NULL; - girq->handler =3D handle_bad_irq; - - /* - * Directly request the irq here instead of passing - * a flow-handler because the irq is shared. - */ - ret =3D devm_request_irq(dev, irq, mlxbf3_gpio_irq_handler, - IRQF_SHARED, dev_name(dev), gs); - if (ret) - return dev_err_probe(dev, ret, "failed to request IRQ"); - } + irq =3D platform_get_irq(pdev, 0); + if (irq >=3D 0) { + girq =3D &gs->gc.irq; + gpio_irq_chip_set_chip(girq, &gpio_mlxbf3_irqchip); + girq->default_type =3D IRQ_TYPE_NONE; + /* This will let us handle the parent IRQ in the driver */ + girq->num_parents =3D 0; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Aug 2025 13:40:14.2326 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b5f1072b-7361-4020-cfa6-08ddd9a5c45d X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS2PEPF00003446.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8738 Content-Type: text/plain; charset="utf-8" The gpio-mlxbf3 driver interfaces with two GPIO controllers, device instance 0 and 1. There is a single IRQ resource shared between the two controllers, and it is found in the ACPI table for device instance 0. The driver should not use platform_get_irq(), otherwise this error is logged when probing instance 1: mlxbf3_gpio MLNXBF33:01: error -ENXIO: IRQ index 0 not found Cc: stable@vger.kernel.org Fixes: cd33f216d241 ("gpio: mlxbf3: Add gpio driver support") Signed-off-by: David Thompson Reviewed-by: Andy Shevchenko --- drivers/gpio/gpio-mlxbf3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-mlxbf3.c b/drivers/gpio/gpio-mlxbf3.c index 10ea71273c89..ed29b07d16c1 100644 --- a/drivers/gpio/gpio-mlxbf3.c +++ b/drivers/gpio/gpio-mlxbf3.c @@ -227,7 +227,7 @@ static int mlxbf3_gpio_probe(struct platform_device *pd= ev) gc->owner =3D THIS_MODULE; gc->add_pin_ranges =3D mlxbf3_gpio_add_pin_ranges; =20 - irq =3D platform_get_irq(pdev, 0); + irq =3D platform_get_irq_optional(pdev, 0); if (irq >=3D 0) { girq =3D &gs->gc.irq; gpio_irq_chip_set_chip(girq, &gpio_mlxbf3_irqchip); --=20 2.43.2