i3c: mipi-i3c-hci-pci: Add exit callback

Prepare to add device-specific features that require cleanup
upon driver removal.  Add ->exit() callback as a counterpart to ->init().

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20251128064038.55158-11-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 7bfb9fe337b6f5a9c47338737cd702f033b3153f..7a91efbd3e54815a33ee94feb1d5020d3a57581b 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
@@ -17,10 +17,12 @@
 struct mipi_i3c_hci_pci {
        struct pci_dev *pci;
        struct platform_device *pdev;
+       const struct mipi_i3c_hci_pci_info *info;
 };
 
 struct mipi_i3c_hci_pci_info {
        int (*init)(struct mipi_i3c_hci_pci *hci);
+       void (*exit)(struct mipi_i3c_hci_pci *hci);
 };
 
 static DEFINE_IDA(mipi_i3c_hci_pci_ida);
@@ -72,7 +74,6 @@ static const struct mipi_i3c_hci_pci_info intel_info = {
 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 mipi_i3c_hci_pci *hci;
        struct resource res[2];
        int dev_id, ret;
@@ -114,21 +115,24 @@ static int mipi_i3c_hci_pci_probe(struct pci_dev *pci,
        if (ret)
                goto err;
 
-       info = (const struct mipi_i3c_hci_pci_info *)id->driver_data;
-       if (info && info->init) {
-               ret = info->init(hci);
+       hci->info = (const struct mipi_i3c_hci_pci_info *)id->driver_data;
+       if (hci->info && hci->info->init) {
+               ret = hci->info->init(hci);
                if (ret)
                        goto err;
        }
 
        ret = platform_device_add(hci->pdev);
        if (ret)
-               goto err;
+               goto err_exit;
 
        pci_set_drvdata(pci, hci);
 
        return 0;
 
+err_exit:
+       if (hci->info && hci->info->exit)
+               hci->info->exit(hci);
 err:
        platform_device_put(hci->pdev);
        ida_free(&mipi_i3c_hci_pci_ida, dev_id);
@@ -141,6 +145,9 @@ static void mipi_i3c_hci_pci_remove(struct pci_dev *pci)
        struct platform_device *pdev = hci->pdev;
        int dev_id = pdev->id;
 
+       if (hci->info && hci->info->exit)
+               hci->info->exit(hci);
+
        platform_device_unregister(pdev);
        ida_free(&mipi_i3c_hci_pci_ida, dev_id);
 }