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authorBob Moore <robert.moore@intel.com>2008-06-10 13:00:32 +0800
committerLen Brown <len.brown@intel.com>2008-06-11 19:13:47 -0400
commit7aa7d4336df34e32195557a1ad422627bd69ef0b (patch)
treef0a5b7fd49d552fddc4cdcae5f97d2846332d8f7 /drivers/acpi
parent46a21e465e506bcd4dba759a39e7ef79978a705d (diff)
downloadop-kernel-dev-7aa7d4336df34e32195557a1ad422627bd69ef0b.zip
op-kernel-dev-7aa7d4336df34e32195557a1ad422627bd69ef0b.tar.gz
ACPICA: Fix to allow zero-length ASL field declarations
Allows null field list in Field(), BankField(), and IndexField(). 2.6.26-rc1 regression: ACPI fails to load SDT. - Dell M1530 http://bugzilla.kernel.org/show_bug.cgi?id=10606 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/dispatcher/dsfield.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/acpi/dispatcher/dsfield.c b/drivers/acpi/dispatcher/dsfield.c
index c780783..f988a5e 100644
--- a/drivers/acpi/dispatcher/dsfield.c
+++ b/drivers/acpi/dispatcher/dsfield.c
@@ -450,10 +450,6 @@ acpi_ds_init_field_objects(union acpi_parse_object *op,
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- if (!arg) {
- return_ACPI_STATUS(AE_AML_NO_OPERAND);
- }
-
/* Creating new namespace node(s), should not already exist */
flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
@@ -467,6 +463,7 @@ acpi_ds_init_field_objects(union acpi_parse_object *op,
/*
* Walk the list of entries in the field_list
+ * Note: field_list can be of zero length. In this case, Arg will be NULL.
*/
while (arg) {
/*
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