Re: [PATCH 1/2] ASoc: cht_bsw_max98090_ti: Fix jack initialization

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Hi,

On 04/05/2017 19:01, Pierre-Louis Bossart wrote:
On 05/02/2017 05:11 AM, Thierry Escande wrote:

If the ts3a227e audio accessory detection hardware is present and its
driver probed, the jack needs to be created before enabling jack
detection in the ts3a227e driver. With this patch, the jack is
instantiated in the max98090 headset init function if the ts3a227e is
present. This fixes a null pointer dereference as the jack detection
enabling function in the ts3a driver was called before the jack is
created.
is this in any way related to
https://bugzilla.kernel.org/show_bug.cgi?id=151521
" Sound not working on Acer Chromebook R11 (CYAN) braswell / cherryview
/ cherry trail"

I provided a similar patch and didn't see any followup.
https://bugzilla.kernel.org/attachment.cgi?id=254867
Thanks
-Pierre

That's the exact same issue.

I fixed it by creating the jack in the aux_dev .init() function since it's how this is done in the rockchip max98090 driver.

Regards,
 Thierry



Signed-off-by: Thierry Escande <thierry.escande@xxxxxxxxxxxxx>
---
  sound/soc/intel/boards/cht_bsw_max98090_ti.c | 50
+++++++++++++++++-----------
  1 file changed, 30 insertions(+), 20 deletions(-)

diff --git a/sound/soc/intel/boards/cht_bsw_max98090_ti.c
b/sound/soc/intel/boards/cht_bsw_max98090_ti.c
index 742bc0d..f17e474 100644
--- a/sound/soc/intel/boards/cht_bsw_max98090_ti.c
+++ b/sound/soc/intel/boards/cht_bsw_max98090_ti.c
@@ -128,30 +128,21 @@ static int cht_codec_init(struct
snd_soc_pcm_runtime *runtime)
      struct cht_mc_private *ctx =
snd_soc_card_get_drvdata(runtime->card);
      struct snd_soc_jack *jack = &ctx->jack;
  -    /**
-    * TI supports 4 butons headset detection
-    * KEY_MEDIA
-    * KEY_VOICECOMMAND
-    * KEY_VOLUMEUP
-    * KEY_VOLUMEDOWN
-    */
-    if (ctx->ts3a227e_present)
-        jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
-                    SND_JACK_BTN_0 | SND_JACK_BTN_1 |
-                    SND_JACK_BTN_2 | SND_JACK_BTN_3;
-    else
-        jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
+    if (ctx->ts3a227e_present) {
+        /*
+         * The jack has already been created in the
+         * cht_max98090_headset_init() function.
+         */
+        snd_soc_jack_notifier_register(jack, &cht_jack_nb);
+        return 0;
+    }
+
+    jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
        ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
                      jack_type, jack, NULL, 0);
-
-    if (ret) {
+    if (ret)
          dev_err(runtime->dev, "Headset Jack creation failed %d\n",
ret);
-        return ret;
-    }
-
-    if (ctx->ts3a227e_present)
-        snd_soc_jack_notifier_register(jack, &cht_jack_nb);
        return ret;
  }
@@ -200,6 +191,25 @@ static int cht_max98090_headset_init(struct
snd_soc_component *component)
  {
      struct snd_soc_card *card = component->card;
      struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
+    struct snd_soc_jack *jack = &ctx->jack;
+    int jack_type;
+    int ret;
+
+    /*
+     * TI supports 4 butons headset detection
+     * KEY_MEDIA
+     * KEY_VOICECOMMAND
+     * KEY_VOLUMEUP
+     * KEY_VOLUMEDOWN
+     */
+    jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
+            SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+            SND_JACK_BTN_2 | SND_JACK_BTN_3;
+
+    ret = snd_soc_card_jack_new(card, "Headset Jack", jack_type,
+                    jack, NULL, 0);
+    if (ret)
+        return ret;
        return ts3a227e_enable_jack_detect(component, &ctx->jack);
  }

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