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| author |   Takashi Iwai <tiwai@suse.de> | 2021-06-08 16:04:36 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-06-09 17:29:37 +0200 |
| commit | 36e7b12b219dc30a4db046756d81745bc9d69167 (patch) | |
| tree | 34988389b7d5563a5fa697754d18e9c43e231410 /sound/isa | |
| parent | ALSA: sb: Fix assignment in if condition (diff) | |
| download | linux-dev-36e7b12b219dc30a4db046756d81745bc9d69167.tar.xz linux-dev-36e7b12b219dc30a4db046756d81745bc9d69167.zip | |
ALSA: sb: Minor coding style fixes
The handling of snd_ctl_new1() and snd_ctl_add() can be sometimes
tricky, as snd_ctl_add() automatically removes the passed object at
its error path. The recent fix addressed an overlooked issue that is
relevant with that in SB driver code, and it can be a bit more
simplified by assigning to a temporary variable, i.e. storing to the
struct field only after the creation succeeds.
Link: https://lore.kernel.org/r/20210608140540.17885-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/isa')
| -rw-r--r-- | sound/isa/sb/emu8000.c | 10 | ||||
| -rw-r--r-- | sound/isa/sb/sb16_csp.c | 19 |
2 files changed, 14 insertions, 15 deletions
diff --git a/sound/isa/sb/emu8000.c b/sound/isa/sb/emu8000.c index 896a862a9f9c..5e4187940265 100644 --- a/sound/isa/sb/emu8000.c +++ b/sound/isa/sb/emu8000.c @@ -1020,6 +1020,7 @@ static const struct snd_kcontrol_new *mixer_defs[EMU8000_NUM_CONTROLS] = { static int snd_emu8000_create_mixer(struct snd_card *card, struct snd_emu8000 *emu) { + struct snd_kcontrol *kctl; int i, err = 0; if (snd_BUG_ON(!emu || !card)) @@ -1029,12 +1030,11 @@ snd_emu8000_create_mixer(struct snd_card *card, struct snd_emu8000 *emu) memset(emu->controls, 0, sizeof(emu->controls)); for (i = 0; i < EMU8000_NUM_CONTROLS; i++) { - emu->controls[i] = snd_ctl_new1(mixer_defs[i], emu); - err = snd_ctl_add(card, emu->controls[i]); - if (err < 0) { - emu->controls[i] = NULL; + kctl = snd_ctl_new1(mixer_defs[i], emu); + err = snd_ctl_add(card, kctl); + if (err < 0) goto __error; - } + emu->controls[i] = kctl; } return 0; diff --git a/sound/isa/sb/sb16_csp.c b/sound/isa/sb/sb16_csp.c index d6ce6b16421c..dec68ae6b599 100644 --- a/sound/isa/sb/sb16_csp.c +++ b/sound/isa/sb/sb16_csp.c @@ -1036,6 +1036,7 @@ static const struct snd_kcontrol_new snd_sb_qsound_space = { static int snd_sb_qsound_build(struct snd_sb_csp * p) { struct snd_card *card; + struct snd_kcontrol *kctl; int err; if (snd_BUG_ON(!p)) @@ -1047,18 +1048,16 @@ static int snd_sb_qsound_build(struct snd_sb_csp * p) spin_lock_init(&p->q_lock); - p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p); - err = snd_ctl_add(card, p->qsound_switch); - if (err < 0) { - p->qsound_switch = NULL; + kctl = snd_ctl_new1(&snd_sb_qsound_switch, p); + err = snd_ctl_add(card, kctl); + if (err < 0) goto __error; - } - p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p); - err = snd_ctl_add(card, p->qsound_space); - if (err < 0) { - p->qsound_space = NULL; + p->qsound_switch = kctl; + kctl = snd_ctl_new1(&snd_sb_qsound_space, p); + err = snd_ctl_add(card, kctl); + if (err < 0) goto __error; - } + p->qsound_space = kctl; return 0; |