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authorViresh Kumar <viresh.kumar@linaro.org>2015-09-27 01:04:06 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-10-04 13:36:07 +0300
commit6e58f752a6502b43e039fd7df2c7c5cde8dde437 (patch)
treeb2569a3bf18bb5baea105240be75ac0514029fce /drivers/acpi/internal.h
parent9ffecb10283508260936b96022d4ee43a7798b4c (diff)
downloadlinux-6e58f752a6502b43e039fd7df2c7c5cde8dde437.tar.xz
ACPI / EC: Fix broken 64bit big-endian users of 'global_lock'
global_lock is defined as an unsigned long and accessing only its lower 32 bits from sysfs is incorrect, as we need to consider other 32 bits for big endian 64-bit systems. There are no such platforms yet, but the code needs to be robust for such a case. Fix that by changing type of 'global_lock' to u32. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/acpi/internal.h')
-rw-r--r--drivers/acpi/internal.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 9e426210c2a8..9db196de003c 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -138,7 +138,7 @@ struct acpi_ec {
unsigned long gpe;
unsigned long command_addr;
unsigned long data_addr;
- unsigned long global_lock;
+ u32 global_lock;
unsigned long flags;
unsigned long reference_count;
struct mutex mutex;