[PATCH 22/26] ps3vram: convert to blk_alloc_disk/blk_cleanup_disk

Christoph Hellwig
2021-05-21T05:53:01Z

Convert the ps3vram driver to use the blk_alloc_disk and blk_cleanup_disk
helpers to simplify gendisk and request_queue allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/block/ps3vram.c | 31 ++++++++-----------------------
1 file changed, 8 insertions(+), 23 deletions(-)

diff --git a/drivers/block/ps3vram.c b/drivers/block/ps3vram.c
index 1d738999fb69..7fbf469651c4 100644
--- a/drivers/block/ps3vram.c
+++ b/drivers/block/ps3vram.c
@@ -67,7 +67,6 @@ struct ps3vram_cache {
};

struct ps3vram_priv {
- struct request_queue *queue;
struct gendisk *gendisk;

u64 size;
@@ -613,7 +612,6 @@ static int ps3vram_probe(struct ps3_system_bus_device *dev)
{
struct ps3vram_priv *priv;
int error, status;
- struct request_queue *queue;
struct gendisk *gendisk;
u64 ddr_size, ddr_lpar, ctrl_lpar, info_lpar, reports_lpar,
reports_size, xdr_lpar;
@@ -736,33 +734,23 @@ static int ps3vram_probe(struct ps3_system_bus_device *dev)

ps3vram_proc_init(dev);

- queue = blk_alloc_queue(NUMA_NO_NODE);
- if (!queue) {
- dev_err(&dev->core, "blk_alloc_queue failed\n");
- error = -ENOMEM;
- goto out_cache_cleanup;
- }
-
- priv->queue = queue;
- blk_queue_max_segments(queue, BLK_MAX_SEGMENTS);
- blk_queue_max_segment_size(queue, BLK_MAX_SEGMENT_SIZE);
- blk_queue_max_hw_sectors(queue, BLK_SAFE_MAX_SECTORS);
-
- gendisk = alloc_disk(1);
+ gendisk = blk_alloc_disk(NUMA_NO_NODE);
if (!gendisk) {
- dev_err(&dev->core, "alloc_disk failed\n");
+ dev_err(&dev->core, "blk_alloc_disk failed\n");
error = -ENOMEM;
- goto fail_cleanup_queue;
+ goto out_cache_cleanup;
}

priv->gendisk = gendisk;
gendisk->major = ps3vram_major;
- gendisk->first_minor = 0;
+ gendisk->minors = 1;
gendisk->fops = &ps3vram_fops;
- gendisk->queue = queue;
gendisk->private_data = dev;
strlcpy(gendisk->disk_name, DEVICE_NAME, sizeof(gendisk->disk_name));
set_capacity(gendisk, priv->size >> 9);
+ blk_queue_max_segments(gendisk->queue, BLK_MAX_SEGMENTS);
+ blk_queue_max_segment_size(gendisk->queue, BLK_MAX_SEGMENT_SIZE);
+ blk_queue_max_hw_sectors(gendisk->queue, BLK_SAFE_MAX_SECTORS);

dev_info(&dev->core, "%s: Using %llu MiB of GPU memory\n",
gendisk->disk_name, get_capacity(gendisk) >> 11);
@@ -770,8 +758,6 @@ static int ps3vram_probe(struct ps3_system_bus_device *dev)
device_add_disk(&dev->core, gendisk, NULL);
return 0;

-fail_cleanup_queue:
- blk_cleanup_queue(queue);
out_cache_cleanup:
remove_proc_entry(DEVICE_NAME, NULL);
ps3vram_cache_cleanup(dev);
@@ -802,8 +788,7 @@ static void ps3vram_remove(struct ps3_system_bus_device *dev)
struct ps3vram_priv *priv = ps3_system_bus_get_drvdata(dev);

del_gendisk(priv->gendisk);
- put_disk(priv->gendisk);
- blk_cleanup_queue(priv->queue);
+ blk_cleanup_disk(priv->gendisk);
remove_proc_entry(DEVICE_NAME, NULL);
ps3vram_cache_cleanup(dev);
iounmap(priv->reports);
--
2.30.2