linux-kernel - [PATCH v2] drivers: spi: Insert the missing pci_dev

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Message-Id: <20240829033511.1917015-1-11162571@vivo.com>
Date: Thu, 29 Aug 2024 11:35:11 +0800
From: Yang Ruibin <11162571@...o.com>
To: Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Mark Brown <broonie@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-spi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: opensource.kernel@...o.com,
	Yang Ruibin <11162571@...o.com>
Subject: [PATCH v2] drivers: spi: Insert the missing pci_dev_put()before return

Increase the reference count by calling pci_get_slot(), and remember to
decrement the reference count by calling pci_dev_put().

Signed-off-by: Yang Ruibin <11162571@...o.com>
---
 drivers/spi/spi-pxa2xx-pci.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c
index cc8dcf782..a7bf4568f 100644
--- a/drivers/spi/spi-pxa2xx-pci.c
+++ b/drivers/spi/spi-pxa2xx-pci.c
@@ -146,8 +146,10 @@ static int lpss_spi_setup(struct pci_dev *dev, struct pxa2xx_spi_controller *c)
 	c->num_chipselect = 1;
 
 	ret = pxa2xx_spi_pci_clk_register(dev, ssp, 50000000);
-	if (ret)
+	if (ret) {
+		pci_dev_put(dma_dev);
 		return ret;
+	}
 
 	dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
 	ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
@@ -222,8 +224,10 @@ static int mrfld_spi_setup(struct pci_dev *dev, struct pxa2xx_spi_controller *c)
 	}
 
 	ret = pxa2xx_spi_pci_clk_register(dev, ssp, 25000000);
-	if (ret)
+	if (ret) {
+		pci_dev_put(dma_dev);
 		return ret;
+	}
 
 	dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(21, 0));
 	ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
-- 
2.34.1