The wm97xx touchscreen driver binds itself to the snd_ac97 device that gets registered by the CODEC driver and expects that the device has already been reset. Before commit 6794f709b712 ("ASoC: ac97: Drop delayed device registration") the device was only registered after the probe function of the CODEC driver had finished running, but starting with the mentioned commit the device is registered as soon as snd_soc_new_ac97_codec() is called. This causes the touchscreen driver to no longer work. Modify the CODEC drivers to use snd_soc_alloc_ac97_codec() instead of snd_soc_new_ac97_codec() and make sure that the AC'97 device is reset before the snd_ac97 device gets registered.
Unified · Split
| @@ -344,23 +344,27 @@ static int wm9705_soc_probe(struct snd_soc_codec *codec) · 343 unmodified lines | ||
| 344 | 344 | struct snd_ac97 *ac97; |
| 345 | 345 | int ret = 0; |
| 346 | 346 | |
| 347 | − ac97 = snd_soc_new_ac97_codec(codec); | |
| 347 | + ac97 = snd_soc_alloc_ac97_codec(codec); | |
| 348 | 348 | if (IS_ERR(ac97)) { |
| 349 | 349 | ret = PTR_ERR(ac97); |
| 350 | 350 | dev_err(codec->dev, "Failed to register AC97 codec\n"); |
| 351 | 351 | return ret; |
| 352 | 352 | } |
| 353 | 353 | |
| 354 | − snd_soc_codec_set_drvdata(codec, ac97); | |
| 355 | − | |
| 356 | 354 | ret = wm9705_reset(codec); |
| 357 | 355 | if (ret) |
| 358 | − goto reset_err; | |
| 356 | + goto err_put_device; | |
| 357 | + | |
| 358 | + ret = device_add(&ac97->dev); | |
| 359 | + if (ret) | |
| 360 | + goto err_put_device; | |
| 361 | + | |
| 362 | + snd_soc_codec_set_drvdata(codec, ac97); | |
| 359 | 363 | |
| 360 | 364 | return 0; |
| 361 | 365 | |
| 362 | −reset_err: | |
| 363 | − snd_soc_free_ac97_codec(ac97); | |
| 366 | +err_put_device: | |
| 367 | + put_device(&ac97->dev); | |
| 364 | 368 | return ret; |
| 365 | 369 | } |
| 366 | 370 | |
| @@ -666,7 +666,7 @@ static int wm9712_soc_probe(struct snd_soc_codec *codec) · 665 unmodified lines | ||
| 666 | 666 | struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec); |
| 667 | 667 | int ret = 0; |
| 668 | 668 | |
| 669 | − wm9712->ac97 = snd_soc_new_ac97_codec(codec); | |
| 669 | + wm9712->ac97 = snd_soc_alloc_ac97_codec(codec); | |
| 670 | 670 | if (IS_ERR(wm9712->ac97)) { |
| 671 | 671 | ret = PTR_ERR(wm9712->ac97); |
| 672 | 672 | dev_err(codec->dev, "Failed to register AC97 codec: %d\n", ret); |
| @@ -675,15 +675,19 @@ static int wm9712_soc_probe(struct snd_soc_codec *codec) · 2 unmodified lines | ||
| 675 | 675 | |
| 676 | 676 | ret = wm9712_reset(codec, 0); |
| 677 | 677 | if (ret < 0) |
| 678 | − goto reset_err; | |
| 678 | + goto err_put_device; | |
| 679 | + | |
| 680 | + ret = device_add(&wm9712->ac97->dev); | |
| 681 | + if (ret) | |
| 682 | + goto err_put_device; | |
| 679 | 683 | |
| 680 | 684 | /* set alc mux to none */ |
| 681 | 685 | ac97_write(codec, AC97_VIDEO, ac97_read(codec, AC97_VIDEO) | 0x3000); |
| 682 | 686 | |
| 683 | 687 | return 0; |
| 684 | 688 | |
| 685 | −reset_err: | |
| 686 | − snd_soc_free_ac97_codec(wm9712->ac97); | |
| 689 | +err_put_device: | |
| 690 | + put_device(&wm9712->ac97->dev); | |
| 687 | 691 | return ret; |
| 688 | 692 | } |
| 689 | 693 | |
| @@ -1225,7 +1225,7 @@ static int wm9713_soc_probe(struct snd_soc_codec *codec) · 1224 unmodified lines | ||
| 1225 | 1225 | struct wm9713_priv *wm9713 = snd_soc_codec_get_drvdata(codec); |
| 1226 | 1226 | int ret = 0, reg; |
| 1227 | 1227 | |
| 1228 | − wm9713->ac97 = snd_soc_new_ac97_codec(codec); | |
| 1228 | + wm9713->ac97 = snd_soc_alloc_ac97_codec(codec); | |
| 1229 | 1229 | if (IS_ERR(wm9713->ac97)) |
| 1230 | 1230 | return PTR_ERR(wm9713->ac97); |
| 1231 | 1231 | |
| @@ -1234,7 +1234,11 @@ static int wm9713_soc_probe(struct snd_soc_codec *codec) · 2 unmodified lines | ||
| 1234 | 1234 | wm9713_reset(codec, 0); |
| 1235 | 1235 | ret = wm9713_reset(codec, 1); |
| 1236 | 1236 | if (ret < 0) |
| 1237 | − goto reset_err; | |
| 1237 | + goto err_put_device; | |
| 1238 | + | |
| 1239 | + ret = device_add(&wm9713->ac97->dev); | |
| 1240 | + if (ret) | |
| 1241 | + goto err_put_device; | |
| 1238 | 1242 | |
| 1239 | 1243 | /* unmute the adc - move to kcontrol */ |
| 1240 | 1244 | reg = ac97_read(codec, AC97_CD) & 0x7fff; |
| @@ -1242,8 +1246,8 @@ static int wm9713_soc_probe(struct snd_soc_codec *codec) · 1 unmodified line | ||
| 1242 | 1246 | |
| 1243 | 1247 | return 0; |
| 1244 | 1248 | |
| 1245 | −reset_err: | |
| 1246 | − snd_soc_free_ac97_codec(wm9713->ac97); | |
| 1249 | +err_put_device: | |
| 1250 | + put_device(&wm9713->ac97->dev); | |
| 1247 | 1251 | return ret; |
| 1248 | 1252 | } |
| 1249 | 1253 | |