From 912ebd99edfa1d1695083fa6d34ac878346ac66b Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 22 Jan 2019 16:21:16 +0100 Subject: [PATCH] EDAC: Do not 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. [ bp: Make edac_debugfs_init() return void too, while at it. ] Signed-off-by: Greg Kroah-Hartman Signed-off-by: Borislav Petkov Cc: James Morse Cc: Mauro Carvalho Chehab Cc: linux-edac Link: https://lkml.kernel.org/r/20190122152151.16139-17-gregkh@linuxfoundation.org --- drivers/edac/debugfs.c | 48 ++++++++++---------------------------- drivers/edac/edac_module.h | 8 +++---- 2 files changed, 16 insertions(+), 40 deletions(-) diff --git a/drivers/edac/debugfs.c b/drivers/edac/debugfs.c index 92dbb7e2320c..0a9277228c50 100644 --- a/drivers/edac/debugfs.c +++ b/drivers/edac/debugfs.c @@ -41,14 +41,9 @@ static const struct file_operations debug_fake_inject_fops = { .llseek = generic_file_llseek, }; -int __init edac_debugfs_init(void) +void __init edac_debugfs_init(void) { edac_debugfs = debugfs_create_dir("edac", NULL); - if (IS_ERR(edac_debugfs)) { - edac_debugfs = NULL; - return -ENOMEM; - } - return 0; } void edac_debugfs_exit(void) @@ -56,50 +51,31 @@ void edac_debugfs_exit(void) debugfs_remove_recursive(edac_debugfs); } -int edac_create_debugfs_nodes(struct mem_ctl_info *mci) +void edac_create_debugfs_nodes(struct mem_ctl_info *mci) { - struct dentry *d, *parent; + struct dentry *parent; char name[80]; int i; - if (!edac_debugfs) - return -ENODEV; - - d = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs); - if (!d) - return -ENOMEM; - parent = d; + parent = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs); for (i = 0; i < mci->n_layers; i++) { sprintf(name, "fake_inject_%s", edac_layer_name[mci->layers[i].type]); - d = debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent, - &mci->fake_inject_layer[i]); - if (!d) - goto nomem; + debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent, + &mci->fake_inject_layer[i]); } - d = debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent, - &mci->fake_inject_ue); - if (!d) - goto nomem; + debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent, + &mci->fake_inject_ue); - d = debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent, - &mci->fake_inject_count); - if (!d) - goto nomem; + debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent, + &mci->fake_inject_count); - d = debugfs_create_file("fake_inject", S_IWUSR, parent, - &mci->dev, - &debug_fake_inject_fops); - if (!d) - goto nomem; + debugfs_create_file("fake_inject", S_IWUSR, parent, &mci->dev, + &debug_fake_inject_fops); mci->debugfs = parent; - return 0; -nomem: - edac_debugfs_remove_recursive(mci->debugfs); - return -ENOMEM; } /* Create a toplevel dir under EDAC's debugfs hierarchy */ diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h index dec88dcea036..dd7d0b509aa3 100644 --- a/drivers/edac/edac_module.h +++ b/drivers/edac/edac_module.h @@ -69,9 +69,9 @@ extern void *edac_align_ptr(void **p, unsigned size, int n_elems); #define edac_debugfs_remove_recursive debugfs_remove_recursive #define edac_debugfs_remove debugfs_remove #ifdef CONFIG_EDAC_DEBUG -int edac_debugfs_init(void); +void edac_debugfs_init(void); void edac_debugfs_exit(void); -int edac_create_debugfs_nodes(struct mem_ctl_info *mci); +void edac_create_debugfs_nodes(struct mem_ctl_info *mci); struct dentry *edac_debugfs_create_dir(const char *dirname); struct dentry * edac_debugfs_create_dir_at(const char *dirname, struct dentry *parent); @@ -83,9 +83,9 @@ edac_debugfs_create_x8(const char *name, umode_t mode, struct dentry *parent, u8 struct dentry * edac_debugfs_create_x16(const char *name, umode_t mode, struct dentry *parent, u16 *value); #else -static inline int edac_debugfs_init(void) { return -ENODEV; } +static inline void edac_debugfs_init(void) { } static inline void edac_debugfs_exit(void) { } -static inline int edac_create_debugfs_nodes(struct mem_ctl_info *mci) { return 0; } +static inline void edac_create_debugfs_nodes(struct mem_ctl_info *mci) { } static inline struct dentry *edac_debugfs_create_dir(const char *dirname) { return NULL; } static inline struct dentry * edac_debugfs_create_dir_at(const char *dirname, struct dentry *parent) { return NULL; } -- 2.39.5