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path: root/drivers/acpi/acpi_configfs.c
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Diffstat (limited to 'drivers/acpi/acpi_configfs.c')
-rw-r--r--drivers/acpi/acpi_configfs.c54
1 files changed, 27 insertions, 27 deletions
diff --git a/drivers/acpi/acpi_configfs.c b/drivers/acpi/acpi_configfs.c
index 76b83b181356..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);
@@ -100,60 +100,60 @@ 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 sprintf(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->signature);
+ return sysfs_emit(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->signature);
}
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 sprintf(str, "%d\n", h->length);
+ return sysfs_emit(str, "%d\n", h->length);
}
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 sprintf(str, "%d\n", h->revision);
+ return sysfs_emit(str, "%d\n", h->revision);
}
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 sprintf(str, "%.*s\n", ACPI_OEM_ID_SIZE, h->oem_id);
+ return sysfs_emit(str, "%.*s\n", ACPI_OEM_ID_SIZE, h->oem_id);
}
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 sprintf(str, "%.*s\n", ACPI_OEM_TABLE_ID_SIZE, h->oem_table_id);
+ return sysfs_emit(str, "%.*s\n", ACPI_OEM_TABLE_ID_SIZE, h->oem_table_id);
}
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 sprintf(str, "%d\n", h->oem_revision);
+ return sysfs_emit(str, "%d\n", h->oem_revision);
}
static ssize_t acpi_table_asl_compiler_id_show(struct config_item *cfg,
@@ -161,10 +161,10 @@ 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 sprintf(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->asl_compiler_id);
+ return sysfs_emit(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->asl_compiler_id);
}
static ssize_t acpi_table_asl_compiler_revision_show(struct config_item *cfg,
@@ -172,10 +172,10 @@ 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 sprintf(str, "%d\n", h->asl_compiler_revision);
+ return sysfs_emit(str, "%d\n", h->asl_compiler_revision);
}
CONFIGFS_ATTR_RO(acpi_table_, signature);