* [PATCH 1/3] ALSA: fm801: Adjust 17 function calls together with a variable assignment
2017-11-15 12:45 [PATCH 0/3] ALSA: fm801: Fine-tuning for seven function implementations SF Markus Elfring
@ 2017-11-15 12:46 ` SF Markus Elfring
2017-11-15 12:47 ` [PATCH 2/3] ALSA: fm801: Use common error handling code in two functions SF Markus Elfring
2017-11-15 12:48 ` [PATCH 3/3] ALSA: fm801: Rename a jump label in snd_card_fm801_probe() SF Markus Elfring
2 siblings, 0 replies; 4+ messages in thread
From: SF Markus Elfring @ 2017-11-15 12:46 UTC (permalink / raw)
To: alsa-devel, Andy Shevchenko, Bhumika Goyal, Jaroslav Kysela,
Takashi Iwai
Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 15 Nov 2017 13:20:49 +0100
The script "checkpatch.pl" pointed information out like the following.
ERROR: do not use assignment in if condition
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
sound/pci/fm801.c | 75 +++++++++++++++++++++++++++++++++----------------------
1 file changed, 45 insertions(+), 30 deletions(-)
diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
index 73a67bc3586b..3648af4581a0 100644
--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -655,9 +655,10 @@ static int snd_fm801_playback_open(struct snd_pcm_substream *substream)
SNDRV_PCM_HW_PARAM_CHANNELS,
&hw_constraints_channels);
}
- if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
- return err;
- return 0;
+
+ err = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+ return (err < 0) ? err : 0;
}
static int snd_fm801_capture_open(struct snd_pcm_substream *substream)
@@ -670,9 +671,9 @@ static int snd_fm801_capture_open(struct snd_pcm_substream *substream)
runtime->hw = snd_fm801_capture;
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
&hw_constraints_rates);
- if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
- return err;
- return 0;
+ err = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+ return (err < 0) ? err : 0;
}
static int snd_fm801_playback_close(struct snd_pcm_substream *substream)
@@ -717,9 +718,9 @@ static int snd_fm801_pcm(struct fm801 *chip, int device)
{
struct pci_dev *pdev = to_pci_dev(chip->dev);
struct snd_pcm *pcm;
- int err;
+ int err = snd_pcm_new(chip->card, "FM801", device, 1, 1, &pcm);
- if ((err = snd_pcm_new(chip->card, "FM801", device, 1, 1, &pcm)) < 0)
+ if (err < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_fm801_playback_ops);
@@ -986,10 +987,10 @@ static int snd_fm801_put_mux(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct fm801 *chip = snd_kcontrol_chip(kcontrol);
- unsigned short val;
+ unsigned short val = ucontrol->value.enumerated.item[0];
- if ((val = ucontrol->value.enumerated.item[0]) > 4)
- return -EINVAL;
+ if (val > 4)
+ return -EINVAL;
return snd_fm801_update_bits(chip, FM801_REC_SRC, 7, val);
}
@@ -1053,19 +1054,22 @@ static int snd_fm801_mixer(struct fm801 *chip)
.read = snd_fm801_codec_read,
};
- if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
+ err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
+ if (err < 0)
return err;
chip->ac97_bus->private_free = snd_fm801_mixer_free_ac97_bus;
memset(&ac97, 0, sizeof(ac97));
ac97.private_data = chip;
ac97.private_free = snd_fm801_mixer_free_ac97;
- if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
+ err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
+ if (err < 0)
return err;
if (chip->secondary) {
ac97.num = 1;
ac97.addr = chip->secondary_addr;
- if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_sec)) < 0)
+ err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_sec);
+ if (err < 0)
return err;
}
for (i = 0; i < FM801_CONTROLS; i++)
@@ -1208,7 +1212,8 @@ static int snd_fm801_create(struct snd_card *card,
};
*rchip = NULL;
- if ((err = pcim_enable_device(pci)) < 0)
+ err = pcim_enable_device(pci);
+ if (err < 0)
return err;
chip = devm_kzalloc(&pci->dev, sizeof(*chip), GFP_KERNEL);
if (chip == NULL)
@@ -1218,7 +1223,8 @@ static int snd_fm801_create(struct snd_card *card,
chip->dev = &pci->dev;
chip->irq = -1;
chip->tea575x_tuner = tea575x_tuner;
- if ((err = pci_request_regions(pci, "FM801")) < 0)
+ err = pci_request_regions(pci, "FM801");
+ if (err < 0)
return err;
chip->port = pci_resource_start(pci, 0);
@@ -1248,7 +1254,8 @@ static int snd_fm801_create(struct snd_card *card,
snd_fm801_chip_init(chip);
- if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+ err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+ if (err < 0) {
snd_fm801_free(chip);
return err;
}
@@ -1321,7 +1328,10 @@ static int snd_card_fm801_probe(struct pci_dev *pci,
0, &card);
if (err < 0)
return err;
- if ((err = snd_fm801_create(card, pci, tea575x_tuner[dev], radio_nr[dev], &chip)) < 0) {
+
+ err = snd_fm801_create(card, pci, tea575x_tuner[dev], radio_nr[dev],
+ &chip);
+ if (err < 0) {
snd_card_free(card);
return err;
}
@@ -1336,35 +1346,40 @@ static int snd_card_fm801_probe(struct pci_dev *pci,
if (chip->tea575x_tuner & TUNER_ONLY)
goto __fm801_tuner_only;
- if ((err = snd_fm801_pcm(chip, 0)) < 0) {
+ err = snd_fm801_pcm(chip, 0);
+ if (err < 0) {
snd_card_free(card);
return err;
}
- if ((err = snd_fm801_mixer(chip)) < 0) {
+ err = snd_fm801_mixer(chip);
+ if (err < 0) {
snd_card_free(card);
return err;
}
- if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_FM801,
- chip->port + FM801_MPU401_DATA,
- MPU401_INFO_INTEGRATED |
- MPU401_INFO_IRQ_HOOK,
- -1, &chip->rmidi)) < 0) {
+ err = snd_mpu401_uart_new(card, 0, MPU401_HW_FM801,
+ chip->port + FM801_MPU401_DATA,
+ MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
+ -1, &chip->rmidi);
+ if (err < 0) {
snd_card_free(card);
return err;
}
- if ((err = snd_opl3_create(card, chip->port + FM801_OPL3_BANK0,
- chip->port + FM801_OPL3_BANK1,
- OPL3_HW_OPL3_FM801, 1, &opl3)) < 0) {
+ err = snd_opl3_create(card, chip->port + FM801_OPL3_BANK0,
+ chip->port + FM801_OPL3_BANK1,
+ OPL3_HW_OPL3_FM801, 1, &opl3);
+ if (err < 0) {
snd_card_free(card);
return err;
}
- if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
+ err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
+ if (err < 0) {
snd_card_free(card);
return err;
}
__fm801_tuner_only:
- if ((err = snd_card_register(card)) < 0) {
+ err = snd_card_register(card);
+ if (err < 0) {
snd_card_free(card);
return err;
}
--
2.15.0
^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCH 2/3] ALSA: fm801: Use common error handling code in two functions
2017-11-15 12:45 [PATCH 0/3] ALSA: fm801: Fine-tuning for seven function implementations SF Markus Elfring
2017-11-15 12:46 ` [PATCH 1/3] ALSA: fm801: Adjust 17 function calls together with a variable assignment SF Markus Elfring
@ 2017-11-15 12:47 ` SF Markus Elfring
2017-11-15 12:48 ` [PATCH 3/3] ALSA: fm801: Rename a jump label in snd_card_fm801_probe() SF Markus Elfring
2 siblings, 0 replies; 4+ messages in thread
From: SF Markus Elfring @ 2017-11-15 12:47 UTC (permalink / raw)
To: alsa-devel, Andy Shevchenko, Bhumika Goyal, Jaroslav Kysela,
Takashi Iwai
Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 15 Nov 2017 13:27:57 +0100
Add jump targets so that a bit of exception handling can be better reused
at the end of these functions.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
sound/pci/fm801.c | 77 ++++++++++++++++++++++++++-----------------------------
1 file changed, 37 insertions(+), 40 deletions(-)
diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
index 3648af4581a0..e4c0fa8db5f6 100644
--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -1245,8 +1245,8 @@ static int snd_fm801_create(struct snd_card *card,
if (devm_request_irq(&pci->dev, pci->irq, snd_fm801_interrupt,
IRQF_SHARED, KBUILD_MODNAME, chip)) {
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
- snd_fm801_free(chip);
- return -EBUSY;
+ err = -EBUSY;
+ goto free_sound_chip;
}
chip->irq = pci->irq;
pci_set_master(pci);
@@ -1255,17 +1255,14 @@ static int snd_fm801_create(struct snd_card *card,
snd_fm801_chip_init(chip);
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
- if (err < 0) {
- snd_fm801_free(chip);
- return err;
- }
+ if (err < 0)
+ goto free_sound_chip;
#ifdef CONFIG_SND_FM801_TEA575X_BOOL
err = v4l2_device_register(&pci->dev, &chip->v4l2_dev);
- if (err < 0) {
- snd_fm801_free(chip);
- return err;
- }
+ if (err < 0)
+ goto free_sound_chip;
+
chip->tea.v4l2_dev = &chip->v4l2_dev;
chip->tea.radio_nr = radio_nr;
chip->tea.private_data = chip;
@@ -1275,8 +1272,8 @@ static int snd_fm801_create(struct snd_card *card,
(chip->tea575x_tuner & TUNER_TYPE_MASK) < 4) {
if (snd_tea575x_init(&chip->tea, THIS_MODULE)) {
dev_err(card->dev, "TEA575x radio not found\n");
- snd_fm801_free(chip);
- return -ENODEV;
+ err = -ENODEV;
+ goto free_sound_chip;
}
} else if ((chip->tea575x_tuner & TUNER_TYPE_MASK) == 0) {
unsigned int tuner_only = chip->tea575x_tuner & TUNER_ONLY;
@@ -1306,6 +1303,10 @@ static int snd_fm801_create(struct snd_card *card,
*rchip = chip;
return 0;
+
+free_sound_chip:
+ snd_fm801_free(chip);
+ return err;
}
static int snd_card_fm801_probe(struct pci_dev *pci,
@@ -1331,10 +1332,9 @@ static int snd_card_fm801_probe(struct pci_dev *pci,
err = snd_fm801_create(card, pci, tea575x_tuner[dev], radio_nr[dev],
&chip);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
card->private_data = chip;
strcpy(card->driver, "FM801");
@@ -1347,45 +1347,42 @@ static int snd_card_fm801_probe(struct pci_dev *pci,
goto __fm801_tuner_only;
err = snd_fm801_pcm(chip, 0);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
err = snd_fm801_mixer(chip);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
err = snd_mpu401_uart_new(card, 0, MPU401_HW_FM801,
chip->port + FM801_MPU401_DATA,
MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
-1, &chip->rmidi);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
err = snd_opl3_create(card, chip->port + FM801_OPL3_BANK0,
chip->port + FM801_OPL3_BANK1,
OPL3_HW_OPL3_FM801, 1, &opl3);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
__fm801_tuner_only:
err = snd_card_register(card);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
pci_set_drvdata(pci, card);
dev++;
return 0;
+
+free_card:
+ snd_card_free(card);
+ return err;
}
static void snd_card_fm801_remove(struct pci_dev *pci)
--
2.15.0
^ permalink raw reply [flat|nested] 4+ messages in thread