linux-kernel - Re: [PATCH] ASoC: ti: ams-delta: Fix cx81801

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Date:   Mon, 9 Oct 2023 08:04:25 +0200
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Janusz Krzysztofik <jmkrzyszt@...il.com>,
        Peter Ujfalusi <peter.ujfalusi@...il.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: ti: ams-delta: Fix cx81801_receive() argument types

On 07. 10. 23, 23:38, Janusz Krzysztofik wrote:
> Since types of arguments accepted by tty_ldis_ops::receive_buf() have
> changed, the driver no longer builds.
> 
> .../linux/sound/soc/ti/ams-delta.c:403:24: error: initialization of 'void (*)(struct tty_struct *, const u8 *, const u8 *, size_t)' {aka 'void (*)(struct tty_struct *, const unsigned char *, const unsigned char *, unsigned int)'} from incompatible pointer type 'void (*)(struct tty_struct *, const u8 *, const char *, int)' {aka 'void (*)(struct tty_struct *, const unsigned char *, const char *, int)'} [-Werror=incompatible-pointer-types]
>    403 |         .receive_buf = cx81801_receive,
> 
> Fix it.
> 
> Fixes: e8161447bb0c ("tty: make tty_ldisc_ops::*buf*() hooks operate on size_t")
> Fixes: 892bc209f250 ("tty: use u8 for flags")
> Signed-off-by: Janusz Krzysztofik <jmkrzyszt@...il.com>

Reviewed-by: Jiri Slaby <jirislaby@...nel.org>

> ---
>   sound/soc/ti/ams-delta.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/soc/ti/ams-delta.c b/sound/soc/ti/ams-delta.c
> index 371943350fdf..666057d50ea0 100644
> --- a/sound/soc/ti/ams-delta.c
> +++ b/sound/soc/ti/ams-delta.c
> @@ -336,8 +336,8 @@ static void cx81801_hangup(struct tty_struct *tty)
>   }
>   
>   /* Line discipline .receive_buf() */
> -static void cx81801_receive(struct tty_struct *tty, const u8 *cp,
> -		const char *fp, int count)
> +static void cx81801_receive(struct tty_struct *tty, const u8 *cp, const u8 *fp,
> +			    size_t count)

Thanks for fixing this. Funny enough that I managed to switch cp, but 
not the others. Yeah, there was a lot to overlook in those big changes.

regards,
-- 
js
suse labs