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crypto: nx - 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, there is no need to store the individual debugfs file names,
especially as the whole directiry is deleted at once, so remove the
unneeded structure entirely.

Cc: "Breno Leitão" <leitao@debian.org>
Cc: Nayna Jain <nayna@linux.ibm.com>
Cc: Paulo Flabiano Smorigo <pfsmorigo@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Greg Kroah-Hartman 2019-06-14 16:29:04 +02:00 committed by Herbert Xu
parent 97a5fee2bd
commit 576d152ccc
3 changed files with 26 additions and 61 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/crypto/nx/nx.c
View File

@ -581,9 +581,7 @@ static int nx_register_algs(void)
memset(&nx_driver.stats, 0, sizeof(struct nx_stats));
rc = NX_DEBUGFS_INIT(&nx_driver);
if (rc)
goto out;
NX_DEBUGFS_INIT(&nx_driver);
nx_driver.of.status = NX_OKAY;

12
drivers/crypto/nx/nx.h
View File

@ -76,20 +76,12 @@ struct nx_stats {
atomic_t last_error_pid;
};
struct nx_debugfs {
struct dentry *dfs_root;
struct dentry *dfs_aes_ops, *dfs_aes_bytes;
struct dentry *dfs_sha256_ops, *dfs_sha256_bytes;
struct dentry *dfs_sha512_ops, *dfs_sha512_bytes;
struct dentry *dfs_errors, *dfs_last_error, *dfs_last_error_pid;
};
struct nx_crypto_driver {
struct nx_stats stats;
struct nx_of of;
struct vio_dev *viodev;
struct vio_driver viodriver;
struct nx_debugfs dfs;
struct dentry *dfs_root;
};
#define NX_GCM4106_NONCE_LEN (4)
@ -177,7 +169,7 @@ struct nx_sg *nx_walk_and_build(struct nx_sg *, unsigned int,
#define NX_DEBUGFS_INIT(drv) nx_debugfs_init(drv)
#define NX_DEBUGFS_FINI(drv) nx_debugfs_fini(drv)
int nx_debugfs_init(struct nx_crypto_driver *);
void nx_debugfs_init(struct nx_crypto_driver *);
void nx_debugfs_fini(struct nx_crypto_driver *);
#else
#define NX_DEBUGFS_INIT(drv) (0)

71
drivers/crypto/nx/nx_debugfs.c
View File

@ -42,62 +42,37 @@
* Documentation/ABI/testing/debugfs-pfo-nx-crypto
*/
int nx_debugfs_init(struct nx_crypto_driver *drv)
void nx_debugfs_init(struct nx_crypto_driver *drv)
{
struct nx_debugfs *dfs = &drv->dfs;
struct dentry *root;
dfs->dfs_root = debugfs_create_dir(NX_NAME, NULL);
root = debugfs_create_dir(NX_NAME, NULL);
drv->dfs_root = root;
dfs->dfs_aes_ops =
debugfs_create_u32("aes_ops",
S_IRUSR | S_IRGRP | S_IROTH,
dfs->dfs_root, (u32 *)&drv->stats.aes_ops);
dfs->dfs_sha256_ops =
debugfs_create_u32("sha256_ops",
S_IRUSR | S_IRGRP | S_IROTH,
dfs->dfs_root,
(u32 *)&drv->stats.sha256_ops);
dfs->dfs_sha512_ops =
debugfs_create_u32("sha512_ops",
S_IRUSR | S_IRGRP | S_IROTH,
dfs->dfs_root,
(u32 *)&drv->stats.sha512_ops);
dfs->dfs_aes_bytes =
debugfs_create_u64("aes_bytes",
S_IRUSR | S_IRGRP | S_IROTH,
dfs->dfs_root,
(u64 *)&drv->stats.aes_bytes);
dfs->dfs_sha256_bytes =
debugfs_create_u64("sha256_bytes",
S_IRUSR | S_IRGRP | S_IROTH,
dfs->dfs_root,
(u64 *)&drv->stats.sha256_bytes);
dfs->dfs_sha512_bytes =
debugfs_create_u64("sha512_bytes",
S_IRUSR | S_IRGRP | S_IROTH,
dfs->dfs_root,
(u64 *)&drv->stats.sha512_bytes);
dfs->dfs_errors =
debugfs_create_u32("errors",
S_IRUSR | S_IRGRP | S_IROTH,
dfs->dfs_root, (u32 *)&drv->stats.errors);
dfs->dfs_last_error =
debugfs_create_u32("last_error",
S_IRUSR | S_IRGRP | S_IROTH,
dfs->dfs_root,
(u32 *)&drv->stats.last_error);
dfs->dfs_last_error_pid =
debugfs_create_u32("last_error_pid",
S_IRUSR | S_IRGRP | S_IROTH,
dfs->dfs_root,
(u32 *)&drv->stats.last_error_pid);
return 0;
debugfs_create_u32("aes_ops", S_IRUSR | S_IRGRP | S_IROTH,
root, (u32 *)&drv->stats.aes_ops);
debugfs_create_u32("sha256_ops", S_IRUSR | S_IRGRP | S_IROTH,
root, (u32 *)&drv->stats.sha256_ops);
debugfs_create_u32("sha512_ops", S_IRUSR | S_IRGRP | S_IROTH,
root, (u32 *)&drv->stats.sha512_ops);
debugfs_create_u64("aes_bytes", S_IRUSR | S_IRGRP | S_IROTH,
root, (u64 *)&drv->stats.aes_bytes);
debugfs_create_u64("sha256_bytes", S_IRUSR | S_IRGRP | S_IROTH,
root, (u64 *)&drv->stats.sha256_bytes);
debugfs_create_u64("sha512_bytes", S_IRUSR | S_IRGRP | S_IROTH,
root, (u64 *)&drv->stats.sha512_bytes);
debugfs_create_u32("errors", S_IRUSR | S_IRGRP | S_IROTH,
root, (u32 *)&drv->stats.errors);
debugfs_create_u32("last_error", S_IRUSR | S_IRGRP | S_IROTH,
root, (u32 *)&drv->stats.last_error);
debugfs_create_u32("last_error_pid", S_IRUSR | S_IRGRP | S_IROTH,
root, (u32 *)&drv->stats.last_error_pid);
}
void
nx_debugfs_fini(struct nx_crypto_driver *drv)
{
debugfs_remove_recursive(drv->dfs.dfs_root);
debugfs_remove_recursive(drv->dfs_root);
}
#endif