Commit 6e58f752 authored by Viresh Kumar's avatar Viresh Kumar Committed by Greg Kroah-Hartman

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: default avatarViresh Kumar <viresh.kumar@linaro.org>
Acked-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9ffecb10
......@@ -128,7 +128,7 @@ static int acpi_ec_add_debugfs(struct acpi_ec *ec, unsigned int ec_device_count)
if (!debugfs_create_x32("gpe", 0444, dev_dir, (u32 *)&first_ec->gpe))
goto error;
if (!debugfs_create_bool("use_global_lock", 0444, dev_dir,
(u32 *)&first_ec->global_lock))
&first_ec->global_lock))
goto error;
if (write_support)
......
......@@ -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;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment