NVMe: Add a character device for each nvme device
Registers a miscellaneous device for each nvme controller probed. This
creates character device files as /dev/nvmeN, where N is the device
instance, and supports nvme admin ioctl commands so devices without
namespaces can be managed.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 7ae7ecf..9b6fba8 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -507,6 +507,8 @@
#ifdef __KERNEL__
#include <linux/pci.h>
+#include <linux/miscdevice.h>
+#include <linux/kref.h>
#define NVME_IO_TIMEOUT (5 * HZ)
@@ -527,6 +529,9 @@
struct msix_entry *entry;
struct nvme_bar __iomem *bar;
struct list_head namespaces;
+ struct kref kref;
+ struct miscdevice miscdev;
+ char name[12];
char serial[20];
char model[40];
char firmware_rev[8];