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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-09-26 15:04:06 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-04 11:36:07 +0100 |
| commit | 6e58f752a6502b43e039fd7df2c7c5cde8dde437 (patch) | |
| tree | b2569a3bf18bb5baea105240be75ac0514029fce | |
| parent | 9ffecb10283508260936b96022d4ee43a7798b4c (diff) | |
| download | linux-6e58f752a6502b43e039fd7df2c7c5cde8dde437.tar.gz linux-6e58f752a6502b43e039fd7df2c7c5cde8dde437.tar.bz2 linux-6e58f752a6502b43e039fd7df2c7c5cde8dde437.zip | |
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>
| -rw-r--r-- | drivers/acpi/ec_sys.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/internal.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/ec_sys.c b/drivers/acpi/ec_sys.c index b4c216bab22b..bea8e425a8de 100644 --- a/drivers/acpi/ec_sys.c +++ b/drivers/acpi/ec_sys.c @@ -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) 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; |