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dax: use correct dev_t value 

The dev_t variable in devm_create_dax_dev() is used before it's
first set:

drivers/dax/dax.c: In function 'devm_create_dax_dev':
drivers/dax/dax.c:205:39: error: 'dev_t' may be used uninitialized in this function [-Werror=maybe-uninitialized]
  inode = iget5_locked(dax_superblock, hash_32(devt + DAXFS_MAGIC, 31),
                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/dax/dax.c:688:8: note: 'dev_t' was declared here

This reorders the code to how it looks correct to me.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 3bc52c45ba ("dax: define a unified inode/address_space for device-dax mappings")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Arnd Bergmann 2016-09-08 15:53:28 +02:00 committed by Dan Williams
parent d76911ee93
commit bc0a0fe94f
1 changed files with 2 additions and 2 deletions
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4
drivers/dax/dax.c
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@ -598,6 +598,8 @@ struct dax_dev *devm_create_dax_dev(struct dax_region *dax_region,
goto err_minor;
}
dev_t = MKDEV(MAJOR(dax_devt), minor);
dev = &dax_dev->dev;
dax_dev->inode = dax_inode_get(&dax_dev->cdev, dev_t);
if (!dax_dev->inode) {
rc = -ENOMEM;
@ -605,8 +607,6 @@ struct dax_dev *devm_create_dax_dev(struct dax_region *dax_region,
}
/* device_initialize() so cdev can reference kobj parent */
dev_t = MKDEV(MAJOR(dax_devt), minor);
dev = &dax_dev->dev;
device_initialize(dev);
cdev = &dax_dev->cdev;