diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-28 01:20:24 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-28 01:20:24 +0100 |
| commit | 5171f4fa744de840c2c20f5b65bd3ee1cd85d0e8 (patch) | |
| tree | 962c881be0b82b2cb973393d98a8a66153167afd /drivers/acpi/utils.c | |
| parent | 975bcabb05436d8b99214a2293d1d5b9c0b0ca08 (diff) | |
| parent | b042453f3892465e8372b95a0f42c0890df03445 (diff) | |
Merge branch 'acpi-assorted'
* acpi-assorted:
ACPI: Add Toshiba NB100 to Vista _OSI blacklist
ACPI / osl: remove an unneeded NULL check
ACPI / platform: add ACPI ID for a Broadcom GPS chip
ACPI: improve acpi_extract_package() utility
ACPI / LPSS: fix UART Auto Flow Control
ACPI / platform: Add ACPI IDs for Intel SST audio device
x86 / ACPI: fix incorrect placement of __initdata tag
ACPI / thermal: convert printk(LEVEL...) to pr_<lvl>
ACPI / sysfs: make GPE sysfs attributes only accept correct values
ACPI / EC: Convert all printk() calls to dynamic debug function
ACPI / button: Using input_set_capability() to mark device's event capability
ACPI / osl: implement acpi_os_sleep() with msleep()
Diffstat (limited to 'drivers/acpi/utils.c')
| -rw-r--r-- | drivers/acpi/utils.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 552248b0005..fc2cd328408 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -169,11 +169,20 @@ acpi_extract_package(union acpi_object *package, /* * Validate output buffer. */ - if (buffer->length < size_required) { + if (buffer->length == ACPI_ALLOCATE_BUFFER) { + buffer->pointer = ACPI_ALLOCATE(size_required); + if (!buffer->pointer) + return AE_NO_MEMORY; buffer->length = size_required; - return AE_BUFFER_OVERFLOW; - } else if (buffer->length != size_required || !buffer->pointer) { - return AE_BAD_PARAMETER; + memset(buffer->pointer, 0, size_required); + } else { + if (buffer->length < size_required) { + buffer->length = size_required; + return AE_BUFFER_OVERFLOW; + } else if (buffer->length != size_required || + !buffer->pointer) { + return AE_BAD_PARAMETER; + } } head = buffer->pointer; |