NVMe: Make admin timeout a module parameter

Signed-off-by: Keith Busch <keith.busch@intel.com>
[made admin_timeout static]
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

drivers/block/nvme-core.c

@@ -47,9 +47,13 @@
 #define NVME_Q_DEPTH		1024
 #define SQ_SIZE(depth)		(depth * sizeof(struct nvme_command))
 #define CQ_SIZE(depth)		(depth * sizeof(struct nvme_completion))
-#define ADMIN_TIMEOUT	(60 * HZ)
+#define ADMIN_TIMEOUT		(admin_timeout * HZ)
 #define IOD_TIMEOUT		(retry_time * HZ)
 
+static unsigned char admin_timeout = 60;
+module_param(admin_timeout, byte, 0644);
+MODULE_PARM_DESC(admin_timeout, "timeout in seconds for admin commands");
+
 unsigned char io_timeout = 30;
 module_param(io_timeout, byte, 0644);
 MODULE_PARM_DESC(io_timeout, "timeout in seconds for I/O");