ACPI EC: Fix regression due to use of uninitialized variable
breakage introduced by following patch
commit 27663c5855b10af9ec67bc7dfba001426ba21222
Author: Matthew Wilcox <willy@linux.intel.com>
Date: Fri Oct 10 02:22:59 2008 -0400
acpi_evaluate_integer() does not clear passed variable if
there is an error at evaluation.
So if we ignore error, we must supply initialized variable.
http://bugzilla.kernel.org/show_bug.cgi?id=11917
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index ef42316..523ac5b 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -736,7 +736,7 @@
ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
{
acpi_status status;
- unsigned long long tmp;
+ unsigned long long tmp = 0;
struct acpi_ec *ec = context;
status = acpi_walk_resources(handle, METHOD_NAME__CRS,
@@ -751,6 +751,7 @@
return status;
ec->gpe = tmp;
/* Use the global lock for all EC transactions? */
+ tmp = 0;
acpi_evaluate_integer(handle, "_GLK", NULL, &tmp);
ec->global_lock = tmp;
ec->handle = handle;