Hi Shenghao,
On Tue, 2025-08-26 at 17:41 +0800, 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@ti.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++)
The previous tas2781_apply_calib() and tas2563_apply_calib() functions performed a big endian conversion on the data readed from the EFI variables.
I couldn't find this in either fmwlib or this file. Could you please recheck if this happens somewhere?
Thanks, Gergo