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ACPI, APEI, Fix APEI related table size checking 

On Huang Ying's machine:

erst_tab->header_length == sizeof(struct acpi_table_einj)

but Yinghai reported that on his machine,

erst_tab->header_length == sizeof(struct acpi_table_einj) -
sizeof(struct acpi_table_header)

To make erst table size checking code works on all systems, both
testing are treated as PASS.

Same situation applies to einj_tab->header_length, so corresponding
table size checking is changed in similar way too.

v2:

- Treat both table size as valid

Originally-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Huang Ying 2010-09-29 19:53:51 +08:00 committed by Len Brown
parent 899611ee7d
commit 3a78f96532
2 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/acpi/apei/einj.c
View File

@ -426,7 +426,9 @@ DEFINE_SIMPLE_ATTRIBUTE(error_inject_fops, NULL,
static int einj_check_table(struct acpi_table_einj *einj_tab)
{
if (einj_tab->header_length != sizeof(struct acpi_table_einj))
if ((einj_tab->header_length !=
(sizeof(struct acpi_table_einj) - sizeof(einj_tab->header)))
&& (einj_tab->header_length != sizeof(struct acpi_table_einj)))
return -EINVAL;
if (einj_tab->header.length < sizeof(struct acpi_table_einj))
return -EINVAL;

4
drivers/acpi/apei/erst.c
View File

@ -750,7 +750,9 @@ __setup("erst_disable", setup_erst_disable);
static int erst_check_table(struct acpi_table_erst *erst_tab)
{
if (erst_tab->header_length != sizeof(struct acpi_table_erst))
if ((erst_tab->header_length !=
(sizeof(struct acpi_table_erst) - sizeof(erst_tab->header)))
&& (erst_tab->header_length != sizeof(struct acpi_table_einj)))
return -EINVAL;
if (erst_tab->header.length < sizeof(struct acpi_table_erst))
return -EINVAL;