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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-06-12 10:25:31 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2019-06-17 13:31:29 +0200
commit5928d8929d8cc3ba89f0af57ddeecaa004aa2340 (patch)
treed5a6a00536e058bb6a7e136e1454aab3ace72e02
parentfcac152782e302a553c6d197d5fb38224b50023e (diff)
downloadlinux-5928d8929d8cc3ba89f0af57ddeecaa004aa2340.tar.bz2
mmc: host: s3cmci: 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. Also, because there is no need to save the file dentries, remove them from the host-specific structure and just recursively delete the directory that the driver created, when shutting down. Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
-rw-r--r--drivers/mmc/host/s3cmci.c27
-rw-r--r--drivers/mmc/host/s3cmci.h2
2 files changed, 6 insertions, 23 deletions
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index f31333e831a7..6a91db7ca5f1 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -1452,33 +1452,18 @@ DEFINE_SHOW_ATTRIBUTE(s3cmci_regs);
static void s3cmci_debugfs_attach(struct s3cmci_host *host)
{
struct device *dev = &host->pdev->dev;
+ struct dentry *root;
- host->debug_root = debugfs_create_dir(dev_name(dev), NULL);
- if (IS_ERR(host->debug_root)) {
- dev_err(dev, "failed to create debugfs root\n");
- return;
- }
-
- host->debug_state = debugfs_create_file("state", 0444,
- host->debug_root, host,
- &s3cmci_state_fops);
-
- if (IS_ERR(host->debug_state))
- dev_err(dev, "failed to create debug state file\n");
-
- host->debug_regs = debugfs_create_file("regs", 0444,
- host->debug_root, host,
- &s3cmci_regs_fops);
+ root = debugfs_create_dir(dev_name(dev), NULL);
+ host->debug_root = root;
- if (IS_ERR(host->debug_regs))
- dev_err(dev, "failed to create debug regs file\n");
+ debugfs_create_file("state", 0444, root, host, &s3cmci_state_fops);
+ debugfs_create_file("regs", 0444, root, host, &s3cmci_regs_fops);
}
static void s3cmci_debugfs_remove(struct s3cmci_host *host)
{
- debugfs_remove(host->debug_regs);
- debugfs_remove(host->debug_state);
- debugfs_remove(host->debug_root);
+ debugfs_remove_recursive(host->debug_root);
}
#else
diff --git a/drivers/mmc/host/s3cmci.h b/drivers/mmc/host/s3cmci.h
index 30c2c0dd1bc8..62cae53b4271 100644
--- a/drivers/mmc/host/s3cmci.h
+++ b/drivers/mmc/host/s3cmci.h
@@ -70,8 +70,6 @@ struct s3cmci_host {
#ifdef CONFIG_DEBUG_FS
struct dentry *debug_root;
- struct dentry *debug_state;
- struct dentry *debug_regs;
#endif
#ifdef CONFIG_ARM_S3C24XX_CPUFREQ