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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/spi/spi-pxa2xx-pci.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * CE4100's SPI device is more or less the same one as found on PXA
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  *
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@@ -5,7 +6,6 @@
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  */
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 #include <linux/clk-provider.h>
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 #include <linux/module.h>
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-#include <linux/of_device.h>
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 #include <linux/pci.h>
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 #include <linux/platform_device.h>
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 #include <linux/spi/pxa2xx_spi.h>
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@@ -35,6 +35,8 @@
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 	bool (*dma_filter)(struct dma_chan *chan, void *param);
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 	void *tx_param;
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 	void *rx_param;
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+
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+	int dma_burst_size;
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 	int (*setup)(struct pci_dev *pdev, struct pxa_spi_info *c);
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 };
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@@ -72,14 +74,23 @@
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 	return true;
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 }
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+static void lpss_dma_put_device(void *dma_dev)
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+{
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+	pci_dev_put(dma_dev);
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+}
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+
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 static int lpss_spi_setup(struct pci_dev *dev, struct pxa_spi_info *c)
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 {
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 	struct pci_dev *dma_dev;
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+	int ret;
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 	c->num_chipselect = 1;
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 	c->max_clk_rate = 50000000;
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 	dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
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+	ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
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+	if (ret)
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+		return ret;
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 	if (c->tx_param) {
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 		struct dw_dma_slave *slave = c->tx_param;
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@@ -103,8 +114,9 @@
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 static int mrfld_spi_setup(struct pci_dev *dev, struct pxa_spi_info *c)
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 {
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-	struct pci_dev *dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(21, 0));
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 	struct dw_dma_slave *tx, *rx;
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+	struct pci_dev *dma_dev;
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+	int ret;
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 	switch (PCI_FUNC(dev->devfn)) {
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 	case 0:
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@@ -129,6 +141,11 @@
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 		return -ENODEV;
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 	}
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+	dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(21, 0));
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+	ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
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+	if (ret)
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+		return ret;
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+
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 	tx = c->tx_param;
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 	tx->dma_dev = &dma_dev->dev;
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@@ -136,6 +153,7 @@
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 	rx->dma_dev = &dma_dev->dev;
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 	c->dma_filter = lpss_dma_filter;
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+	c->dma_burst_size = 8;
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 	return 0;
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 }
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@@ -207,7 +225,7 @@
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 	struct platform_device_info pi;
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 	int ret;
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 	struct platform_device *pdev;
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-	struct pxa2xx_spi_master spi_pdata;
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+	struct pxa2xx_spi_controller spi_pdata;
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 	struct ssp_device *ssp;
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 	struct pxa_spi_info *c;
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 	char buf[40];
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@@ -233,6 +251,7 @@
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 	spi_pdata.tx_param = c->tx_param;
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 	spi_pdata.rx_param = c->rx_param;
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 	spi_pdata.enable_dma = c->rx_param && c->tx_param;
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+	spi_pdata.dma_burst_size = c->dma_burst_size ? c->dma_burst_size : 1;
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 	ssp = &spi_pdata.ssp;
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 	ssp->phys_base = pci_resource_start(dev, 0);
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@@ -275,7 +294,7 @@
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 static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
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 {
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 	struct platform_device *pdev = pci_get_drvdata(dev);
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-	struct pxa2xx_spi_master *spi_pdata;
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+	struct pxa2xx_spi_controller *spi_pdata;
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 	spi_pdata = dev_get_platdata(&pdev->dev);
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