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Subject[patch -v2 17/23] acpi: use memory_read_from_buffer
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Len Brown <len.brown@intel.com>
Cc: linux-acpi@vger.kernel.org
---
drivers/acpi/system.c | 15 ++-------------
1 file changed, 2 insertions(+), 13 deletions(-)
Index: 2.6-git/drivers/acpi/system.c
===================================================================
--- 2.6-git.orig/drivers/acpi/system.c
+++ 2.6-git/drivers/acpi/system.c
@@ -77,7 +77,6 @@ static ssize_t acpi_table_show(struct ko
container_of(bin_attr, struct acpi_table_attr, attr);
struct acpi_table_header *table_header = NULL;
acpi_status status;
- ssize_t ret_count = count;

status =
acpi_get_table(table_attr->name, table_attr->instance,
@@ -85,18 +84,8 @@ static ssize_t acpi_table_show(struct ko
if (ACPI_FAILURE(status))
return -ENODEV;

- if (offset >= table_header->length) {
- ret_count = 0;
- goto end;
- }
-
- if (offset + ret_count > table_header->length)
- ret_count = table_header->length - offset;
-
- memcpy(buf, ((char *)table_header) + offset, ret_count);
-
- end:
- return ret_count;
+ return memory_read_from_buffer(buf, count, &offset,
+ table_header, table_header->length);
}

static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
--


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