mtip32xx: Convert to new IDA API

Removes a use of ida_pre_get() and a personalised spinlock.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index c73626d..2b6d6bc 100644 (file)
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -118,7 +118,6 @@ static struct dentry *dfs_device_status;
 
 static u32 cpu_use[NR_CPUS];
 
-static DEFINE_SPINLOCK(rssd_index_lock);
 static DEFINE_IDA(rssd_index_ida);
 
 static int mtip_block_initialize(struct driver_data *dd);
@@ -3768,20 +3767,10 @@ static int mtip_block_initialize(struct driver_data *dd)
                goto alloc_disk_error;
        }
 
-       /* Generate the disk name, implemented same as in sd.c */
-       do {
-               if (!ida_pre_get(&rssd_index_ida, GFP_KERNEL)) {
-                       rv = -ENOMEM;
-                       goto ida_get_error;
-               }
-
-               spin_lock(&rssd_index_lock);
-               rv = ida_get_new(&rssd_index_ida, &index);
-               spin_unlock(&rssd_index_lock);
-       } while (rv == -EAGAIN);
-
-       if (rv)
+       rv = ida_alloc(&rssd_index_ida, GFP_KERNEL);
+       if (rv < 0)
                goto ida_get_error;
+       index = rv;
 
        rv = rssd_disk_name_format("rssd",
                                index,
@@ -3923,9 +3912,7 @@ block_queue_alloc_init_error:
 block_queue_alloc_tag_error:
        mtip_hw_debugfs_exit(dd);
 disk_index_error:
-       spin_lock(&rssd_index_lock);
-       ida_remove(&rssd_index_ida, index);
-       spin_unlock(&rssd_index_lock);
+       ida_free(&rssd_index_ida, index);
 
 ida_get_error:
        put_disk(dd->disk);
@@ -4013,9 +4000,7 @@ static int mtip_block_remove(struct driver_data *dd)
        }
        dd->disk  = NULL;
 
-       spin_lock(&rssd_index_lock);
-       ida_remove(&rssd_index_ida, dd->index);
-       spin_unlock(&rssd_index_lock);
+       ida_free(&rssd_index_ida, dd->index);
 
        /* De-initialize the protocol layer. */
        mtip_hw_exit(dd);
@@ -4055,9 +4040,7 @@ static int mtip_block_shutdown(struct driver_data *dd)
                dd->queue = NULL;
        }
 
-       spin_lock(&rssd_index_lock);
-       ida_remove(&rssd_index_ida, dd->index);
-       spin_unlock(&rssd_index_lock);
+       ida_free(&rssd_index_ida, dd->index);
        return 0;
 }