From mboxrd@z Thu Jan 1 00:00:00 1970 From: Akinobu Mita Subject: [patch -v3 16/22] acpi: use memory_read_from_buffer Date: Wed, 04 Jun 2008 20:56:49 +0900 Message-ID: <20080604115824.062644468@gmail.com> References: <20080604115633.116832712@gmail.com> Return-path: Received: from rv-out-0506.google.com ([209.85.198.225]:42730 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760215AbYFDMKp (ORCPT ); Wed, 4 Jun 2008 08:10:45 -0400 Received: by rv-out-0506.google.com with SMTP id l9so79958rvb.1 for ; Wed, 04 Jun 2008 05:10:44 -0700 (PDT) Content-Disposition: inline; filename=acpi-use-memory-read-from-buffer.patch Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org Cc: Len Brown , linux-acpi@vger.kernel.org Signed-off-by: Akinobu Mita Cc: Len Brown 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, --