Commit 45c16fe1 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Rafael J. Wysocki
Browse files

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: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent ae573387

drivers/acpi/acpi_configfs.c

+19 −19
Original line number Diff line number Diff line
@@ -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);

}