linux-kernel - [PATCH v1 1/4] dmaengine: hsu: Finish conversion to managed resources

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Message-Id: <20220713172235.22611-1-andriy.shevchenko@linux.intel.com>
Date:   Wed, 13 Jul 2022 20:22:32 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Vinod Koul <vkoul@...nel.org>
Subject: [PATCH v1 1/4] dmaengine: hsu: Finish conversion to managed resources

With help of devm_add_action_or_reset() we may finish conversion
the driver to use managed resources.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/dma/hsu/pci.c | 27 ++++++++++++---------------
 1 file changed, 12 insertions(+), 15 deletions(-)

diff --git a/drivers/dma/hsu/pci.c b/drivers/dma/hsu/pci.c
index 6a2df3dd78d0..4ed6a4ef1512 100644
--- a/drivers/dma/hsu/pci.c
+++ b/drivers/dma/hsu/pci.c
@@ -47,8 +47,14 @@ static irqreturn_t hsu_pci_irq(int irq, void *dev)
 	return IRQ_RETVAL(ret);
 }
 
+static void hsu_pci_dma_remove(void *chip)
+{
+	hsu_dma_remove(chip);
+}
+
 static int hsu_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
+	struct device *dev = &pdev->dev;
 	struct hsu_dma_chip *chip;
 	int ret;
 
@@ -87,9 +93,13 @@ static int hsu_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (ret)
 		return ret;
 
-	ret = request_irq(chip->irq, hsu_pci_irq, 0, "hsu_dma_pci", chip);
+	ret = devm_add_action_or_reset(dev, hsu_pci_dma_remove, chip);
 	if (ret)
-		goto err_register_irq;
+		return ret;
+
+	ret = devm_request_irq(dev, chip->irq, hsu_pci_irq, 0, "hsu_dma_pci", chip);
+	if (ret)
+		return ret;
 
 	/*
 	 * On Intel Tangier B0 and Anniedale the interrupt line, disregarding
@@ -105,18 +115,6 @@ static int hsu_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	pci_set_drvdata(pdev, chip);
 
 	return 0;
-
-err_register_irq:
-	hsu_dma_remove(chip);
-	return ret;
-}
-
-static void hsu_pci_remove(struct pci_dev *pdev)
-{
-	struct hsu_dma_chip *chip = pci_get_drvdata(pdev);
-
-	free_irq(chip->irq, chip);
-	hsu_dma_remove(chip);
 }
 
 static const struct pci_device_id hsu_pci_id_table[] = {
@@ -130,7 +128,6 @@ static struct pci_driver hsu_pci_driver = {
 	.name		= "hsu_dma_pci",
 	.id_table	= hsu_pci_id_table,
 	.probe		= hsu_pci_probe,
-	.remove		= hsu_pci_remove,
 };
 
 module_pci_driver(hsu_pci_driver);
-- 
2.35.1