From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: Alexandru Ardelean <alexandru.ardelean@analog.com>,
Mark Brown <broonie@kernel.org>,
kernel test robot <lkp@intel.com>,
kernel@pengutronix.de, linux-kernel@vger.kernel.org,
linux-input@vger.kernel.org, linux-spi@vger.kernel.org,
David Jander <david@protonic.nl>
Subject: Re: [PATCH v1] Input: ads7846: ads7846_get_value - fix unaligned pointer value warning
Date: Thu, 9 Sep 2021 22:04:16 -0700 [thread overview]
Message-ID: <YTrnUFI53iwvwxrj@google.com> (raw)
In-Reply-To: <20210707124115.20028-1-o.rempel@pengutronix.de>
Hi Oleksij,
On Wed, Jul 07, 2021 at 02:41:15PM +0200, Oleksij Rempel wrote:
> Fix warning reported by the kernel test robot:
> drivers/input/touchscreen/ads7846.c:705:24: warning: taking address
> of packed member 'data' of class or structure 'ads7846_buf' may result
> in an unaligned pointer value [-Waddress-of-packed-member]
>
> Fixes: 6965eece2a89 ("Input: ads7846 - convert to one message")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> ---
> drivers/input/touchscreen/ads7846.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
> index adb4c2230c31..1987dedac94f 100644
> --- a/drivers/input/touchscreen/ads7846.c
> +++ b/drivers/input/touchscreen/ads7846.c
> @@ -702,7 +702,7 @@ static int ads7846_get_value(struct ads7846_buf *buf)
> {
> int value;
>
> - value = be16_to_cpup(&buf->data);
> + value = get_unaligned_be16(&buf->data);
ds7846_buf is declared as packed so I believe using be16_to_cpu(buf->data)
will suffice.
I can adjust on my side if you agree.
Thanks.
--
Dmitry
next prev parent reply other threads:[~2021-09-10 5:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 12:41 [PATCH v1] Input: ads7846: ads7846_get_value - fix unaligned pointer value warning Oleksij Rempel
2021-09-10 5:04 ` Dmitry Torokhov [this message]
2021-09-10 7:51 ` Oleksij Rempel
2021-10-17 4:23 ` Dmitry Torokhov
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