From bda17b82bfa9601f167ec338755b0b96909db5a0 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 11 Sep 2014 14:39:09 +0200 Subject: ALSA: hda - Make snd_hda_jack_detect_enable_callback() returning the jack object STAC/IDT driver calls snd_hda_jack_tbl_get() again after calling snd_hda_jack_detect_enable_callback(). For simplifying this, let's make snd_hda_jack_detect_enable_callback() returning the pointer while handling the error with the standard IS_ERR() & co. Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_jack.c | 24 +++++++++++++++++------- sound/pci/hda/hda_jack.h | 5 +++-- sound/pci/hda/patch_sigmatel.c | 14 ++++++-------- 3 files changed, 26 insertions(+), 17 deletions(-) (limited to 'sound') diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c index 7f332794993f..a5fe1b428015 100644 --- a/sound/pci/hda/hda_jack.c +++ b/sound/pci/hda/hda_jack.c @@ -214,29 +214,39 @@ EXPORT_SYMBOL_GPL(snd_hda_jack_detect_state); /** * snd_hda_jack_detect_enable - enable the jack-detection + * + * In the case of error, the return value will be a pointer embedded with + * errno. Check and handle the return value appropriately with standard + * macros such as @IS_ERR() and @PTR_ERR(). */ -int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid, - hda_jack_callback cb) +struct hda_jack_tbl * +snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid, + hda_jack_callback cb) { struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid); + int err; + if (!jack) - return -ENOMEM; + return ERR_PTR(-ENOMEM); if (jack->jack_detect) - return 0; /* already registered */ + return jack; /* already registered */ jack->jack_detect = 1; if (cb) jack->callback = cb; if (codec->jackpoll_interval > 0) - return 0; /* No unsol if we're polling instead */ - return snd_hda_codec_write_cache(codec, nid, 0, + return jack; /* No unsol if we're polling instead */ + err = snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_UNSOLICITED_ENABLE, AC_USRSP_EN | jack->tag); + if (err < 0) + return ERR_PTR(err); + return jack; } EXPORT_SYMBOL_GPL(snd_hda_jack_detect_enable_callback); int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid) { - return snd_hda_jack_detect_enable_callback(codec, nid, NULL); + return PTR_ERR_OR_ZERO(snd_hda_jack_detect_enable_callback(codec, nid, NULL)); } EXPORT_SYMBOL_GPL(snd_hda_jack_detect_enable); diff --git a/sound/pci/hda/hda_jack.h b/sound/pci/hda/hda_jack.h index 67f42db9c89c..668669ce3e52 100644 --- a/sound/pci/hda/hda_jack.h +++ b/sound/pci/hda/hda_jack.h @@ -47,8 +47,9 @@ void snd_hda_jack_tbl_clear(struct hda_codec *codec); void snd_hda_jack_set_dirty_all(struct hda_codec *codec); int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid); -int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid, - hda_jack_callback cb); +struct hda_jack_tbl * +snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid, + hda_jack_callback cb); int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid, hda_nid_t gating_nid); diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index bc371cfb5d84..4b338beb9449 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -3019,10 +3019,9 @@ static void stac92hd71bxx_fixup_hp_m4(struct hda_codec *codec, /* Enable VREF power saving on GPIO1 detect */ snd_hda_codec_write_cache(codec, codec->afg, 0, AC_VERB_SET_GPIO_UNSOLICITED_RSP_MASK, 0x02); - snd_hda_jack_detect_enable_callback(codec, codec->afg, - stac_vref_event); - jack = snd_hda_jack_tbl_get(codec, codec->afg); - if (jack) + jack = snd_hda_jack_detect_enable_callback(codec, codec->afg, + stac_vref_event); + if (!IS_ERR(jack)) jack->private_data = 0x02; spec->gpio_mask |= 0x02; @@ -4042,10 +4041,9 @@ static void stac9205_fixup_dell_m43(struct hda_codec *codec, /* Enable unsol response for GPIO4/Dock HP connection */ snd_hda_codec_write_cache(codec, codec->afg, 0, AC_VERB_SET_GPIO_UNSOLICITED_RSP_MASK, 0x10); - snd_hda_jack_detect_enable_callback(codec, codec->afg, - stac_vref_event); - jack = snd_hda_jack_tbl_get(codec, codec->afg); - if (jack) + jack = snd_hda_jack_detect_enable_callback(codec, codec->afg, + stac_vref_event); + if (!IS_ERR(jack)) jack->private_data = 0x01; spec->gpio_dir = 0x0b; -- cgit v1.2.3-59-g8ed1b