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mmc: core: no need to check return value of debugfs_create functions 

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Greg Kroah-Hartman 2019-06-12 10:25:28 +02:00 committed by Ulf Hansson
parent 163367c952
commit a04c50aaa9
2 changed files with 9 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
drivers/mmc/core/debugfs.c
View File

@ -230,45 +230,21 @@ void mmc_add_host_debugfs(struct mmc_host *host)
struct dentry *root;
root = debugfs_create_dir(mmc_hostname(host), NULL);
if (IS_ERR(root))
/* Don't complain -- debugfs just isn't enabled */
return;
if (!root)
/* Complain -- debugfs is enabled, but it failed to
* create the directory. */
goto err_root;
host->debugfs_root = root;
if (!debugfs_create_file("ios", S_IRUSR, root, host, &mmc_ios_fops))
goto err_node;
if (!debugfs_create_x32("caps", S_IRUSR, root, &host->caps))
goto err_node;
if (!debugfs_create_x32("caps2", S_IRUSR, root, &host->caps2))
goto err_node;
if (!debugfs_create_file("clock", S_IRUSR | S_IWUSR, root, host,
&mmc_clock_fops))
goto err_node;
debugfs_create_file("ios", S_IRUSR, root, host, &mmc_ios_fops);
debugfs_create_x32("caps", S_IRUSR, root, &host->caps);
debugfs_create_x32("caps2", S_IRUSR, root, &host->caps2);
debugfs_create_file("clock", S_IRUSR | S_IWUSR, root, host,
&mmc_clock_fops);
#ifdef CONFIG_FAIL_MMC_REQUEST
if (fail_request)
setup_fault_attr(&fail_default_attr, fail_request);
host->fail_mmc_request = fail_default_attr;
if (IS_ERR(fault_create_debugfs_attr("fail_mmc_request",
root,
&host->fail_mmc_request)))
goto err_node;
fault_create_debugfs_attr("fail_mmc_request", root,
&host->fail_mmc_request);
#endif
return;
err_node:
debugfs_remove_recursive(root);
host->debugfs_root = NULL;
err_root:
dev_err(&host->class_dev, "failed to initialize debugfs\n");
}
void mmc_remove_host_debugfs(struct mmc_host *host)
@ -285,25 +261,9 @@ void mmc_add_card_debugfs(struct mmc_card *card)
return;
root = debugfs_create_dir(mmc_card_id(card), host->debugfs_root);
if (IS_ERR(root))
/* Don't complain -- debugfs just isn't enabled */
return;
if (!root)
/* Complain -- debugfs is enabled, but it failed to
* create the directory. */
goto err;
card->debugfs_root = root;
if (!debugfs_create_x32("state", S_IRUSR, root, &card->state))
goto err;
return;
err:
debugfs_remove_recursive(root);
card->debugfs_root = NULL;
dev_err(&card->dev, "failed to initialize debugfs\n");
debugfs_create_x32("state", S_IRUSR, root, &card->state);
}
void mmc_remove_card_debugfs(struct mmc_card *card)

10
drivers/mmc/core/mmc_test.c
View File

@ -3167,15 +3167,7 @@ static int __mmc_test_register_dbgfs_file(struct mmc_card *card,
struct mmc_test_dbgfs_file *df;
if (card->debugfs_root)
file = debugfs_create_file(name, mode, card->debugfs_root,
card, fops);
if (IS_ERR_OR_NULL(file)) {
dev_err(&card->dev,
"Can't create %s. Perhaps debugfs is disabled.\n",
name);
return -ENODEV;
}
debugfs_create_file(name, mode, card->debugfs_root, card, fops);
df = kmalloc(sizeof(*df), GFP_KERNEL);
if (!df) {