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

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Date:   Sun, 08 Oct 2023 11:42:50 +0200
From:   Janusz Krzysztofik <jmkrzyszt@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Peter Ujfalusi <peter.ujfalusi@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        "Jiri Slaby (SUSE)" <jirislaby@...nel.org>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: ti: ams-delta: Fix cx81801_receive() argument types

Dnia niedziela, 8 października 2023 07:04:39 CEST Greg Kroah-Hartman pisze:
> On Sat, Oct 07, 2023 at 11:38:18PM +0200, 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>
> > ---
> >  sound/soc/ti/ams-delta.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> Odd no built-bots caught this, maybe no one normally builds this file?

The driver depends on SND, SND_SOC and TTY, but can't be selected 
individually, only via its user.  Then, it usually builds when 
CONFIG_SND_SOC_OMAP_AMS_DELTA=y, and that's probably uncommon due to 
specific dependencies.  However, cx20442 can also be selected and built 
with CONFIG_COMPILE_TEST=y and CONFIG_SND_SOC_ALL_CODECS=y.  Since similar 
approach seems to apply to quite a number of ASoC CODECs, maybe build-bots 
should pay special attention to select SND_SOC_ALL_CODECS more frequently, 
like they probably do with COMPILE_TEST.

Thanks,
Janusz

> Anyway, I'll pick this up in my tty tree now, thanks!
> 
> greg k-h
> 


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