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NVMe: don't allocate unused nvme_major 

When alloc_disk(0) is used, the ->major number is ignored.  All device
numbers are allocated with a major of BLOCK_EXT_MAJOR.

So remove all references to nvme_major.

[akpm@linux-foundation.org: one unregister_blkdev() was missed]
Link: http://lkml.kernel.org/r/20160602064318.4403.93301.stgit@noble
Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
NeilBrown 2016-07-13 11:03:58 -07:00 committed by Jens Axboe
parent 2fa843512b
commit b09dcf585d
1 changed files with 1 additions and 15 deletions
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16
drivers/nvme/host/core.c
View File

@ -53,9 +53,6 @@ module_param_named(max_retries, nvme_max_retries, uint, 0644);
MODULE_PARM_DESC(max_retries, "max number of retries a command may have");
EXPORT_SYMBOL_GPL(nvme_max_retries);
static int nvme_major;
module_param(nvme_major, int, 0);
static int nvme_char_major;
module_param(nvme_char_major, int, 0);
@ -1674,8 +1671,6 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
blk_queue_logical_block_size(ns->queue, 1 << ns->lba_shift);
nvme_set_queue_limits(ctrl, ns->queue);
disk->major = nvme_major;
disk->first_minor = 0;
disk->fops = &nvme_fops;
disk->private_data = ns;
disk->queue = ns->queue;
@ -2085,16 +2080,10 @@ int __init nvme_core_init(void)
{
int result;
result = register_blkdev(nvme_major, "nvme");
if (result < 0)
return result;
else if (result > 0)
nvme_major = result;
result = __register_chrdev(nvme_char_major, 0, NVME_MINORS, "nvme",
&nvme_dev_fops);
if (result < 0)
goto unregister_blkdev;
return result;
else if (result > 0)
nvme_char_major = result;
@ -2108,8 +2097,6 @@ int __init nvme_core_init(void)
unregister_chrdev:
__unregister_chrdev(nvme_char_major, 0, NVME_MINORS, "nvme");
unregister_blkdev:
unregister_blkdev(nvme_major, "nvme");
return result;
}
@ -2117,7 +2104,6 @@ void nvme_core_exit(void)
{
class_destroy(nvme_class);
__unregister_chrdev(nvme_char_major, 0, NVME_MINORS, "nvme");
unregister_blkdev(nvme_major, "nvme");
}
MODULE_LICENSE("GPL");