The patch titled
PCI ACPI: fix uninitialized variable in __pci_osc_support_set
has been added to the -mm tree. Its filename is
pci-acpi-fix-uninitialized-variable-in-__pci_osc_support_set.patch
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------------------------------------------------------
Subject: PCI ACPI: fix uninitialized variable in __pci_osc_support_set
From: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
If the ACPI namespace doesn't have any device object corresponding to the
specified hid, 'retval' in __pci_osc_support_set() is not changed by the
acpi_query_osc() callback. Since 'retval' is not initizlized in the current
implementation, the contents of 'retval' is undefined in this case. This
causes a mis-handling of ctrlset_buf[OSC_SUPPORT_TYPE] and will cause an
unexpected result in the subsequent pci_osc_control_set() call as a result.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: "Li, Shaohua" <shaohua.li@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/pci/pci-acpi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/pci/pci-acpi.c~pci-acpi-fix-uninitialized-variable-in-__pci_osc_support_set drivers/pci/pci-acpi.c
--- a/drivers/pci/pci-acpi.c~pci-acpi-fix-uninitialized-variable-in-__pci_osc_support_set
+++ a/drivers/pci/pci-acpi.c
@@ -166,7 +166,7 @@ run_osc_out:
acpi_status __pci_osc_support_set(u32 flags, const char *hid)
{
u32 temp;
- acpi_status retval;
+ acpi_status retval = AE_NOT_FOUND;
if (!(flags & OSC_SUPPORT_MASKS)) {
return AE_TYPE;
_
Patches currently in -mm which might be from kaneshige.kenji@xxxxxxxxxxxxxx are
pci-acpi-fix-uninitialized-variable-in-__pci_osc_support_set.patch
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