diff options
Diffstat (limited to 'drivers/dax/super.c')
| -rw-r--r-- | drivers/dax/super.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/dax/super.c b/drivers/dax/super.c index e498daf3c0d7..8e32345be0f7 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -349,9 +349,6 @@ int dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff, { if (!dax_alive(dax_dev)) return -ENXIO; - - if (!dax_dev->ops->zero_page_range) - return -EOPNOTSUPP; /* * There are no callers that want to zero more than one page as of now. * Once users are there, this check can be removed after the @@ -571,9 +568,16 @@ struct dax_device *alloc_dax(void *private, const char *__host, dev_t devt; int minor; + if (ops && !ops->zero_page_range) { + pr_debug("%s: error: device does not provide dax" + " operation zero_page_range()\n", + __host ? __host : "Unknown"); + return ERR_PTR(-EINVAL); + } + host = kstrdup(__host, GFP_KERNEL); if (__host && !host) - return NULL; + return ERR_PTR(-ENOMEM); minor = ida_simple_get(&dax_minor_ida, 0, MINORMASK+1, GFP_KERNEL); if (minor < 0) @@ -596,7 +600,7 @@ struct dax_device *alloc_dax(void *private, const char *__host, ida_simple_remove(&dax_minor_ida, minor); err_minor: kfree(host); - return NULL; + return ERR_PTR(-ENOMEM); } EXPORT_SYMBOL_GPL(alloc_dax); |