From: John Garry <john.garry@huawei.com>
To: <jejb@linux.ibm.com>, <martin.petersen@oracle.com>,
<lenb@kernel.org>, <rjw@rjwysocki.net>,
<gregkh@linuxfoundation.org>, <tglx@linutronix.de>
Cc: <linux-scsi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linuxarm@huawei.com>, <linux-acpi@vger.kernel.org>,
<maz@kernel.org>, "John Garry" <john.garry@huawei.com>
Subject: [PATCH v3 3/5] driver core: platform: Add platform_put_irq()
Date: Thu, 26 Nov 2020 01:20:39 +0800 [thread overview]
Message-ID: <1606324841-217570-4-git-send-email-john.garry@huawei.com> (raw)
In-Reply-To: <1606324841-217570-1-git-send-email-john.garry@huawei.com>
Add a function to tear down the work which was done in platform_get_irq()
for when the device driver is done with the irq.
For ACPI companion devices the irq resource is set as disabled, as this
resource is configured from platform_get_irq()->acpi_irq_get() and requires
resetting.
Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/base/platform.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 88aef93eb4dd..3eeda3746701 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -289,6 +289,20 @@ int platform_irq_count(struct platform_device *dev)
}
EXPORT_SYMBOL_GPL(platform_irq_count);
+void platform_put_irq(struct platform_device *dev, unsigned int num)
+{
+ unsigned int virq = platform_get_irq(dev, num);
+
+ irq_dispose_mapping(virq);
+ if (has_acpi_companion(&dev->dev)) {
+ struct resource *r = platform_get_resource(dev, IORESOURCE_IRQ,
+ num);
+
+ if (r)
+ acpi_dev_irqresource_disabled(r, 0);
+ }
+}
+
/**
* platform_get_resource_byname - get a resource for a device by name
* @dev: platform device
--
2.26.2
next prev parent reply other threads:[~2020-11-25 17:25 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-25 17:20 [PATCH v3 0/5] Support managed interrupts for platform devices John Garry
2020-11-25 17:20 ` [PATCH v3 1/5] genirq/affinity: Add irq_update_affinity_desc() John Garry
2020-11-26 8:51 ` Daniel Wagner
2020-11-26 8:54 ` John Garry
2020-11-25 17:20 ` [PATCH v3 2/5] ACPI: Make acpi_dev_irqresource_disabled() public John Garry
2020-11-25 17:43 ` Rafael J. Wysocki
2020-11-26 8:49 ` John Garry
2020-11-26 14:24 ` Rafael J. Wysocki
2020-11-25 17:20 ` John Garry [this message]
2020-11-26 9:28 ` [PATCH v3 3/5] driver core: platform: Add platform_put_irq() Marc Zyngier
2020-11-26 11:23 ` John Garry
2020-11-25 17:20 ` [PATCH v3 4/5] Driver core: platform: Add devm_platform_get_irqs_affinity() John Garry
2020-11-25 17:20 ` [PATCH v3 5/5] scsi: hisi_sas: Expose HW queues for v2 hw John Garry
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