linux-kernel - Re: [PATCH] ALSA: Don't cold reset AC97 codecs in some ICH chipsets

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 28 Jan 2009 13:06:20 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ALSA: Don't cold reset AC97 codecs in some ICH chipsets

At Wed, 28 Jan 2009 08:02:36 -0200,
Thadeu Lima de Souza Cascardo wrote:
> 
> Check in a quirk list if it should do cold reset when AC97 power saving
> is enabled. Some devices do not resume properly when cold reset,
> although power saving works OK.
> 
> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>

Thanks for the patch.
We can go better further with this patch now :)

The logic is basically fine, but just a few comments...

> diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
> index 19d3391..69b3ed8 100644
> --- a/sound/pci/intel8x0.c
> +++ b/sound/pci/intel8x0.c
...
> +static int snd_intel8x0_ich_chip_cold_reset(struct intel8x0 *chip)
> +{
> +	unsigned int cnt;
>  	/* ACLink on, 2 channels */
> +
> +	if (snd_pci_quirk_lookup(chip->pci, ich_chip_reset_mode))
> +		return -EIO;

I feel it isn't intuitive to return -EIO here.
It'd be more straightforward to call snd_intel8x0_ich_chip_reset()
from here?

	if (snd_pci_quirk_lookup(chip->pci, ich_chip_reset_mode))
		return snd_intl8x0_ich_chip_reset(chip);


> +	if (snd_intel8x0_ich_chip_cold_reset(chip) < 0)
> +		if ((err = snd_intel8x0_ich_chip_reset(chip)) < 0)
> +			return err;

Please make the change checkpatch-clean.

Could you fix and repost?


thanks,

Takashi
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/