i3c: mipi-i3c-hci-pci: Allocate a structure for mipi_i3c_hci_pci device information

Allocate a structure for mipi_i3c_hci_pci device information, in
preparation for additional changes that need to store mipi_i3c_hci_pci
device-specific information.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20251128064038.55158-9-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
index b9794212b2fbe5827fca6a4b15c010d1bbf80b15..8936e50eddf783a60bccdee2a55f75d81a2dd542 100644 (file)
--- a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
+++ b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
@@ -14,6 +14,10 @@
 #include <linux/pci.h>
 #include <linux/platform_device.h>
 
+struct mipi_i3c_hci_pci {
+       struct platform_device *pdev;
+};
+
 struct mipi_i3c_hci_pci_info {
        int (*init)(struct pci_dev *pci);
 };
@@ -68,10 +72,14 @@ static int mipi_i3c_hci_pci_probe(struct pci_dev *pci,
                                  const struct pci_device_id *id)
 {
        const struct mipi_i3c_hci_pci_info *info;
-       struct platform_device *pdev;
+       struct mipi_i3c_hci_pci *hci;
        struct resource res[2];
        int dev_id, ret;
 
+       hci = devm_kzalloc(&pci->dev, sizeof(*hci), GFP_KERNEL);
+       if (!hci)
+               return -ENOMEM;
+
        ret = pcim_enable_device(pci);
        if (ret)
                return ret;
@@ -92,14 +100,14 @@ static int mipi_i3c_hci_pci_probe(struct pci_dev *pci,
        if (dev_id < 0)
                return dev_id;
 
-       pdev = platform_device_alloc("mipi-i3c-hci", dev_id);
-       if (!pdev)
+       hci->pdev = platform_device_alloc("mipi-i3c-hci", dev_id);
+       if (!hci->pdev)
                return -ENOMEM;
 
-       pdev->dev.parent = &pci->dev;
-       device_set_node(&pdev->dev, dev_fwnode(&pci->dev));
+       hci->pdev->dev.parent = &pci->dev;
+       device_set_node(&hci->pdev->dev, dev_fwnode(&pci->dev));
 
-       ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
+       ret = platform_device_add_resources(hci->pdev, res, ARRAY_SIZE(res));
        if (ret)
                goto err;
 
@@ -110,23 +118,24 @@ static int mipi_i3c_hci_pci_probe(struct pci_dev *pci,
                        goto err;
        }
 
-       ret = platform_device_add(pdev);
+       ret = platform_device_add(hci->pdev);
        if (ret)
                goto err;
 
-       pci_set_drvdata(pci, pdev);
+       pci_set_drvdata(pci, hci);
 
        return 0;
 
 err:
-       platform_device_put(pdev);
+       platform_device_put(hci->pdev);
        ida_free(&mipi_i3c_hci_pci_ida, dev_id);
        return ret;
 }
 
 static void mipi_i3c_hci_pci_remove(struct pci_dev *pci)
 {
-       struct platform_device *pdev = pci_get_drvdata(pci);
+       struct mipi_i3c_hci_pci *hci = pci_get_drvdata(pci);
+       struct platform_device *pdev = hci->pdev;
        int dev_id = pdev->id;
 
        platform_device_unregister(pdev);