Now that device_add_disk() supports returning an error, use that. We must unwind alloc_dax() on error. Reviewed-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx> --- drivers/nvdimm/pmem.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index d98af6c31f42..fe7ece1534e1 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -505,7 +505,9 @@ static int pmem_attach_disk(struct device *dev, dax_write_cache(dax_dev, nvdimm_has_cache(nd_region)); pmem->dax_dev = dax_dev; - device_add_disk(dev, disk, pmem_attribute_groups); + rc = device_add_disk(dev, disk, pmem_attribute_groups); + if (rc) + goto out_cleanup_dax; if (devm_add_action_or_reset(dev, pmem_release_disk, pmem)) return -ENOMEM; @@ -516,6 +518,10 @@ static int pmem_attach_disk(struct device *dev, if (!pmem->bb_state) dev_warn(dev, "'badblocks' notification disabled\n"); return 0; + +out_cleanup_dax: + kill_dax(pmem->dax_dev); + put_dax(pmem->dax_dev); out: blk_cleanup_disk(pmem->disk); return rc; -- 2.33.0
