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Merge branch 'acpica-fixes'

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* acpica-fixes:
  ACPICA: Tables: Mechanism to handle late stage acpi_get_table() imbalance
  Revert "ACPICA: Disassembler: Enhance resource descriptor detection"
This commit is contained in:
Rafael J. Wysocki 2017-06-15 01:52:32 +02:00
commit 9522933454
3 changed files with 39 additions and 18 deletions
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34
drivers/acpi/acpica/tbutils.c
View file

@ -416,9 +416,18 @@ acpi_tb_get_table(struct acpi_table_desc *table_desc,
}
}
table_desc->validation_count++;
if (table_desc->validation_count == 0) {
table_desc->validation_count--;
if (table_desc->validation_count < ACPI_MAX_TABLE_VALIDATIONS) {
table_desc->validation_count++;
/*
* Detect validation_count overflows to ensure that the warning
* message will only be printed once.
*/
if (table_desc->validation_count >= ACPI_MAX_TABLE_VALIDATIONS) {
ACPI_WARNING((AE_INFO,
"Table %p, Validation count overflows\n",
table_desc));
}
}
*out_table = table_desc->pointer;
@ -445,13 +454,20 @@ void acpi_tb_put_table(struct acpi_table_desc *table_desc)
ACPI_FUNCTION_TRACE(acpi_tb_put_table);
if (table_desc->validation_count == 0) {
ACPI_WARNING((AE_INFO,
"Table %p, Validation count is zero before decrement\n",
table_desc));
return_VOID;
if (table_desc->validation_count < ACPI_MAX_TABLE_VALIDATIONS) {
table_desc->validation_count--;
/*
* Detect validation_count underflows to ensure that the warning
* message will only be printed once.
*/
if (table_desc->validation_count >= ACPI_MAX_TABLE_VALIDATIONS) {
ACPI_WARNING((AE_INFO,
"Table %p, Validation count underflows\n",
table_desc));
return_VOID;
}
}
table_desc->validation_count--;
if (table_desc->validation_count == 0) {

9
drivers/acpi/acpica/utresrc.c
View file

@ -474,15 +474,6 @@ acpi_ut_walk_aml_resources(struct acpi_walk_state *walk_state,
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
/*
* The end_tag opcode must be followed by a zero byte.
* Although this byte is technically defined to be a checksum,
* in practice, all ASL compilers set this byte to zero.
*/
if (*(aml + 1) != 0) {
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
/* Return the pointer to the end_tag if requested */
if (!user_function) {