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| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-07-15 17:16:51 +0300 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-07-16 19:20:28 +0200 |
| commit | 45c16fe1d1283bdd3e32bd869bf5aa177fcd50f7 (patch) | |
| tree | 3e513ac4bbefa0da026d82afb7b75f3314e1fb22 /drivers/acpi/acpi_configfs.c | |
| parent | ACPI: configfs: Use sysfs_emit() in "show" functions (diff) | |
| download | linux-dev-45c16fe1d1283bdd3e32bd869bf5aa177fcd50f7.tar.xz linux-dev-45c16fe1d1283bdd3e32bd869bf5aa177fcd50f7.zip | |
ACPI: configfs: Make get_header() to return error pointer
Instead of duplicating error codes here and there,
make get_header() to return error pointer.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpi_configfs.c')
| -rw-r--r-- | drivers/acpi/acpi_configfs.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/drivers/acpi/acpi_configfs.c b/drivers/acpi/acpi_configfs.c index 6e6ef8a1f447..c970792b11a4 100644 --- a/drivers/acpi/acpi_configfs.c +++ b/drivers/acpi/acpi_configfs.c @@ -70,7 +70,7 @@ static inline struct acpi_table_header *get_header(struct config_item *cfg) if (!table->header) pr_err("table not loaded\n"); - return table->header; + return table->header ?: ERR_PTR(-EINVAL); } static ssize_t acpi_table_aml_read(struct config_item *cfg, @@ -78,8 +78,8 @@ static ssize_t acpi_table_aml_read(struct config_item *cfg, { struct acpi_table_header *h = get_header(cfg); - if (!h) - return -EINVAL; + if (IS_ERR(h)) + return PTR_ERR(h); if (data) memcpy(data, h, h->length); @@ -100,8 +100,8 @@ static ssize_t acpi_table_signature_show(struct config_item *cfg, char *str) { struct acpi_table_header *h = get_header(cfg); - if (!h) - return -EINVAL; + if (IS_ERR(h)) + return PTR_ERR(h); return sysfs_emit(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->signature); } @@ -110,8 +110,8 @@ static ssize_t acpi_table_length_show(struct config_item *cfg, char *str) { struct acpi_table_header *h = get_header(cfg); - if (!h) - return -EINVAL; + if (IS_ERR(h)) + return PTR_ERR(h); return sysfs_emit(str, "%d\n", h->length); } @@ -120,8 +120,8 @@ static ssize_t acpi_table_revision_show(struct config_item *cfg, char *str) { struct acpi_table_header *h = get_header(cfg); - if (!h) - return -EINVAL; + if (IS_ERR(h)) + return PTR_ERR(h); return sysfs_emit(str, "%d\n", h->revision); } @@ -130,8 +130,8 @@ static ssize_t acpi_table_oem_id_show(struct config_item *cfg, char *str) { struct acpi_table_header *h = get_header(cfg); - if (!h) - return -EINVAL; + if (IS_ERR(h)) + return PTR_ERR(h); return sysfs_emit(str, "%.*s\n", ACPI_OEM_ID_SIZE, h->oem_id); } @@ -140,8 +140,8 @@ static ssize_t acpi_table_oem_table_id_show(struct config_item *cfg, char *str) { struct acpi_table_header *h = get_header(cfg); - if (!h) - return -EINVAL; + if (IS_ERR(h)) + return PTR_ERR(h); return sysfs_emit(str, "%.*s\n", ACPI_OEM_TABLE_ID_SIZE, h->oem_table_id); } @@ -150,8 +150,8 @@ static ssize_t acpi_table_oem_revision_show(struct config_item *cfg, char *str) { struct acpi_table_header *h = get_header(cfg); - if (!h) - return -EINVAL; + if (IS_ERR(h)) + return PTR_ERR(h); return sysfs_emit(str, "%d\n", h->oem_revision); } @@ -161,8 +161,8 @@ static ssize_t acpi_table_asl_compiler_id_show(struct config_item *cfg, { struct acpi_table_header *h = get_header(cfg); - if (!h) - return -EINVAL; + if (IS_ERR(h)) + return PTR_ERR(h); return sysfs_emit(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->asl_compiler_id); } @@ -172,8 +172,8 @@ static ssize_t acpi_table_asl_compiler_revision_show(struct config_item *cfg, { struct acpi_table_header *h = get_header(cfg); - if (!h) - return -EINVAL; + if (IS_ERR(h)) + return PTR_ERR(h); return sysfs_emit(str, "%d\n", h->asl_compiler_revision); } |