diff options
| author | Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> | 2008-05-13 16:48:50 +0900 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-05-13 09:51:54 -0700 |
| commit | c4e5fadd2a6fc0da465dcde761877d9a87313b33 (patch) | |
| tree | 8dc0fe170bde8997fe41a27f5b9115e4e31bcc64 /drivers/pci | |
| parent | 77db9885646f8a88214ea482988d41f8f73630f4 (diff) | |
ACPI/PCI: another multiple _OSC memory leak fix
The acpi_query_osc() function can be called for the ACPI object that
doesn't have _OSC method. In this case, acpi_get_osc_data() would
allocate a useless memory region. To avoid this, we need to check the
existence of _OSC before calling acpi_get_osc_data() in acpi_query_osc().
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci-acpi.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 38fc8b1ff881..9d6fc8e6285d 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -60,9 +60,15 @@ acpi_query_osc ( union acpi_object *out_obj; u32 osc_dw0; acpi_status *ret_status = (acpi_status *)retval; - struct acpi_osc_data *osc_data = acpi_get_osc_data(handle); + struct acpi_osc_data *osc_data; u32 flags = (unsigned long)context, temp; + acpi_handle tmp; + status = acpi_get_handle(handle, "_OSC", &tmp); + if (ACPI_FAILURE(status)) + return status; + + osc_data = acpi_get_osc_data(handle); if (!osc_data) { printk(KERN_ERR "acpi osc data array is full\n"); return AE_ERROR; |