[Lkw] [PATCH] nvme-cmb: add pci_driver This is the absolute minimal viable Linux kernel module. Signed-off-by: Andres Ferra <andres.ferrar at mi.unc.edu.ar>

Andres Ferra andres.ferra at mi.unc.edu.ar
Fri Sep 15 14:03:30 EDT 2023


---
 drivers/block/nvme-cmb.c | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/drivers/block/nvme-cmb.c b/drivers/block/nvme-cmb.c
index a0f18106c95a..6d4ed726e65c 100644
--- a/drivers/block/nvme-cmb.c
+++ b/drivers/block/nvme-cmb.c
@@ -1,18 +1,43 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/pci.h>
 
 MODULE_LICENSE("GPL");
 
+static int nvme_cmb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+       dev_info(&pdev->dev, "found NVMe device\n");
+       return 0;
+}
+
+static void nvme_cmb_remove(struct pci_dev *pdev)
+{
+       dev_info(&pdev->dev, "unbinding NVMe device\n");
+}
+
+static const struct pci_device_id nvme_cmb_id_table[] = {
+       { PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) },
+       { 0, }
+};
+
+static struct pci_driver nvme_cmb_driver = {
+       .name = "nvme_cmb",
+       .id_table = nvme_cmb_id_table,
+       .probe = nvme_cmb_probe,
+       .remove = nvme_cmb_remove,
+};
+
 static int __init nvme_cmb_init(void)
 {
 	pr_info("loading nvme-cmb module\n");
-	return 0;
+	return pci_register_driver(&nvme_cmb_driver);
 }
 
 static void __exit nvme_cmb_exit(void)
 {
 	pr_info("unloading nvme-cmb module\n");
+	pci_unregister_driver(&nvme_cmb_driver);
 }
 
 module_init(nvme_cmb_init);
-- 
2.39.2




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