linux-kernel - Re: [PATCH v2 3/3] backlight: lp855x: Add support ACPI enumeration

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Message-ID: <5d431db5-30dc-b51c-7abb-ab57a3de2f8f@redhat.com>
Date:   Wed, 3 Nov 2021 18:28:15 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Daniel Thompson <daniel.thompson@...aro.org>
Cc:     Lee Jones <lee.jones@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Tsuchiya Yuto <kitakar@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] backlight: lp855x: Add support ACPI enumeration

Hi,

On 11/3/21 18:17, Daniel Thompson wrote:
> On Tue, Nov 02, 2021 at 11:55:04PM +0100, Hans de Goede wrote:
>> The Xiaomi Mi Pad 2 tablet uses an ACPI enumerated LP8556 backlight
>> controller for its LCD-panel, with a Xiaomi specific ACPI HID of
>> "XMCC0001", add support for this.
>>
>> Note the new "if (id)" check also fixes a NULL pointer deref when a user
>> tries to manually bind the driver from sysfs.
>>
>> When CONFIG_ACPI is disabled acpi_match_device() will always return NULL,
>> so the lp855x_parse_acpi() call will get optimized away.
>>
>> Signed-off-by: Hans de Goede <hdegoede@...hat.com>
> 
> Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>

Thank you.

So what is the process for upstreaming backlight patches,
do these go through drm-misc-next (in that case I can push
the series myself), or will you pick these up ?

Regards,

Hans