Re: [PATCH 1/2] toshiba_acpi: Add extra check to backlight code

[Greg KH <greg@kroah.com>]

On Mon, Aug 04, 2014 at 09:21:01AM -0600, Azael Avalos wrote:
> Some Toshiba models (most notably Qosmios) come with an
> incomplete backlight method where the AML code doesn't
> check for write or read commands and always returns
> HCI_SUCCESS and the actual brightness (and in some
> cases the max brightness), thus allowing the backlight
> interface to be registered without write support.
> 
> This patch changes the set_lcd_brightness function,
> checking the returned values for values greater than
> zero to avoid registering a broken backlight interface.
> 
> Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
> ---
>  drivers/platform/x86/toshiba_acpi.c | 21 +++++++++++++++++----
>  1 file changed, 17 insertions(+), 4 deletions(-)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
for how to do this properly.

</formletter>