linux-kernel - Re: [PATCH v2] ALSA: hda/tas2781: Fix EFI name for calibration beginning with 1 instead of 0

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]

Message-ID: <878qj6gkwk.wl-tiwai@suse.de>
Date: Tue, 26 Aug 2025 17:30:51 +0200
From: Takashi Iwai <tiwai@...e.de>
To: Shenghao Ding <shenghao-ding@...com>
Cc: <broonie@...nel.org>,
	<andriy.shevchenko@...ux.intel.com>,
	<13564923607@....com>,
	<13916275206@....com>,
	<alsa-devel@...a-project.org>,
	<linux-kernel@...r.kernel.org>,
	<baojun.xu@...com>,
	<Baojun.Xu@....com>,
	<jesse-ji@...com>
Subject: Re: [PATCH v2] ALSA: hda/tas2781: Fix EFI name for calibration beginning with 1 instead of 0

On Tue, 26 Aug 2025 11:41:05 +0200,
Shenghao Ding wrote:
> 
> A bug reported by one of my customers that EFI name beginning with 0
> instead of 1.
> 
> Fixes: 4fe238513407 ("ALSA: hda/tas2781: Move and unified the calibrated-data getting function for SPI and I2C into the tas2781_hda lib")
> Signed-off-by: Shenghao Ding <shenghao-ding@...com>
> 
> ---
> v2:
>  - remove unrelated change
> v1:
>  - Fix EFI name beginning with 1 instead of 0
>  - Add extra comments on EFI name for calibration
>  - Remove an extra space
> ---
>  sound/hda/codecs/side-codecs/tas2781_hda_i2c.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c b/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c
> index ed7771ab9475..635cbd8820ac 100644
> --- a/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c
> +++ b/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c
> @@ -340,7 +340,8 @@ static int tas2563_save_calibration(struct tas2781_hda *h)
>  		data[offset] = i;
>  		offset++;
>  		for (j = 0; j < TASDEV_CALIB_N; ++j) {
> -			ret = snprintf(var8, sizeof(var8), vars[j], i);
> +			/* EFI name for calibration started with 1, not 0 */
> +			ret = snprintf(var8, sizeof(var8), vars[j], i + 1);
>  
>  			if (ret < 0 || ret >= sizeof(var8) - 1) {
>  				dev_err(p->dev, "%s: Read %s failed\n",
> @@ -349,7 +350,7 @@ static int tas2563_save_calibration(struct tas2781_hda *h)
>  			}
>  			/*
>  			 * Our variable names are ASCII by construction, but
> -			 * EFI names are wide chars.  Convert and zero-pad.
> +			 * EFI names are wide chars. Convert and zero-pad.
>  			 */
>  			memset(efi_name, 0, sizeof(efi_name));
>  			for (k = 0; k < sizeof(var8) && var8[k]; k++)

Please drop unrelated change and concentrate on the real issue.


thanks,

Takashi