[PATCH v2 1/2] drivers: libata: introduce sysctl directory

[Enrico Weigelt, metux IT consult]

Register a sysctl directory for libata, so upcoming knobs
can be added here.

Signed-off-by: Enrico Weigelt, metux IT consult <i...@metux.net>
---
 drivers/ata/libata-core.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index aaa57e0..2af2470 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -160,6 +160,21 @@ struct ata_force_ent {
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
 
+static struct ctl_table ctl_libata[] = {
+       {}
+};
+
+static struct ctl_table libata_dir_table[] = {
+       {
+               .procname       = "libata",
+               .maxlen         = 0,
+               .mode           = 0555,
+               .child          = ctl_libata,
+       },
+       { },
+};
+
+static struct ctl_table_header *libata_sysctl_header;
 
 static bool ata_sstatus_online(u32 sstatus)
 {
@@ -7043,6 +7058,8 @@ static int __init ata_init(void)
                goto err_out;
        }
 
+       libata_sysctl_header = register_sysctl_table(libata_dir_table);
+
        printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n");
        return 0;
 
@@ -7056,6 +7073,7 @@ static void __exit ata_exit(void)
        libata_transport_exit();
        ata_sff_exit();
        kfree(ata_force_tbl);
+       unregister_sysctl_table(libata_sysctl_header);
 }
 
 subsys_initcall(ata_init);
-- 
1.9.1