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mtd: nand: nandsim: fix error check

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debugfs_create_dir() and debugfs_create_file() returns NULL on error or
a pointer on success. They do not return the error value with ERR_PTR.
So we should not check the return with IS_ERR_OR_NULL, instead we
should just check for NULL.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This commit is contained in:
Sudip Mukherjee 2016-11-16 08:02:55 +00:00 committed by Boris Brezillon
parent 37871abdd5
commit 442168273e
1 changed files with 5 additions and 10 deletions
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15
drivers/mtd/nand/nandsim.c
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@ -525,24 +525,20 @@ static int nandsim_debugfs_create(struct nandsim *dev)
{
struct nandsim_debug_info *dbg = &dev->dbg;
struct dentry *dent;
int err;
if (!IS_ENABLED(CONFIG_DEBUG_FS))
return 0;
dent = debugfs_create_dir("nandsim", NULL);
if (IS_ERR_OR_NULL(dent)) {
int err = dent ? -ENODEV : PTR_ERR(dent);
NS_ERR("cannot create \"nandsim\" debugfs directory, err %d\n",
err);
return err;
if (!dent) {
NS_ERR("cannot create \"nandsim\" debugfs directory\n");
return -ENODEV;
}
dbg->dfs_root = dent;
dent = debugfs_create_file("wear_report", S_IRUSR,
dbg->dfs_root, dev, &dfs_fops);
if (IS_ERR_OR_NULL(dent))
if (!dent)
goto out_remove;
dbg->dfs_wear_report = dent;
@ -550,8 +546,7 @@ static int nandsim_debugfs_create(struct nandsim *dev)
out_remove:
debugfs_remove_recursive(dbg->dfs_root);
err = dent ? PTR_ERR(dent) : -ENODEV;
return err;
return -ENODEV;
}
/**