PCI example added

1 files changed, 17 insertions, 0 deletions

diff --git a/kernel-devel/module-basics/vain_pci/vain_pci_3.c b/kernel-devel/module-basics/vain_pci/vain_pci_3.c
new file mode 100644
index 0000000..77bee68
--- /dev/null
+++ b/kernel-devel/module-basics/vain_pci/vain_pci_3.c
@@ -0,0 +1,17 @@
+	ret = pci_request_regions(pdev, "vain_pci");
+	if (ret) {
+		dev_err(&pdev->dev, "I/O address 0x%04x already in use\n",
+			(int) /* nozomi_private.io_addr */ 0);
+		goto err_disable_device;
+	}
+
+	info->base = pci_ioremap_bar(pdev, 0);
+	if (!info->base) {
+		dev_err(&pdev->dev, "Unable to map card MMIO\n");
+		ret = -ENODEV;
+		goto err_rel_regs;
+	}
+
+	pci_set_drvdata(pdev, info);
+
+	return 0;