# \[PATCH V5 1/2\] ACPI / EC: Fix broken 64bit big-endian users of 'global\_lock'

- From: Greg Kroah-Hartman \<gregkh@linuxfoundation.org\>
- Date: 2015-10-04 09:54:11 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2015/10/4589935
- Thread: https://ratatoskr.run/linux-arm-kernel/2015/09/4584403/t.md

```text
On Sun, Sep 27, 2015 at 03:48:24PM +0200, Rafael J. Wysocki wrote:
> On Sun, Sep 27, 2015 at 12:04 AM, Viresh Kumar [ref] wrote:
> > 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 <redacted>
> 
> Greg, please take this one along with the [2/2] if that one looks good to you.

Thanks, will do.

greg k-h
```