* [PATCH 1/2] ALSA: intel8x0m: Adjust 12 function calls together with a variable assignment
2017-11-15 21:04 [PATCH 0/2] ALSA: intel8x0m: Fine-tuning for five function implementations SF Markus Elfring
@ 2017-11-15 21:05 ` SF Markus Elfring
2017-11-15 21:06 ` [PATCH 2/2] ALSA: intel8x0m: Use common error handling code in two functions SF Markus Elfring
1 sibling, 0 replies; 3+ messages in thread
From: SF Markus Elfring @ 2017-11-15 21:05 UTC (permalink / raw)
To: alsa-devel, Arvind Yadav, Bhumika Goyal, Jaroslav Kysela, Takashi Iwai
Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 15 Nov 2017 21:34:23 +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/intel8x0m.c | 36 ++++++++++++++++++++++++------------
1 file changed, 24 insertions(+), 12 deletions(-)
diff --git a/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
index 3a4769a97d29..ab798533a6bc 100644
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -372,7 +372,8 @@ static unsigned short snd_intel8x0m_codec_read(struct snd_ac97 *ac97,
res = 0xffff;
} else {
res = iagetword(chip, reg + ac97->num * 0x80);
- if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
+ tmp = igetdword(chip, ICHREG(GLOB_STA));
+ if (tmp & ICH_RCS) {
/* reset RCS and preserve other R/WC bits */
iputdword(chip, ICHREG(GLOB_STA),
tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
@@ -847,7 +848,8 @@ static int snd_intel8x0m_mixer(struct intel8x0m *chip, int ac97_clock)
glob_sta = igetdword(chip, ICHREG(GLOB_STA));
- if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
+ err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus);
+ if (err < 0)
goto __err;
pbus->private_free = snd_intel8x0m_mixer_free_ac97_bus;
if (ac97_clock >= 8000 && ac97_clock <= 48000)
@@ -856,7 +858,8 @@ static int snd_intel8x0m_mixer(struct intel8x0m *chip, int ac97_clock)
ac97.pci = chip->pci;
ac97.num = glob_sta & ICH_SCR ? 1 : 0;
- if ((err = snd_ac97_mixer(pbus, &ac97, &x97)) < 0) {
+ err = snd_ac97_mixer(pbus, &ac97, &x97);
+ if (err < 0) {
dev_err(chip->card->dev,
"Unable to initialize codec #%d\n", ac97.num);
if (ac97.num == 0)
@@ -974,7 +977,8 @@ static int snd_intel8x0m_chip_init(struct intel8x0m *chip, int probing)
unsigned int i;
int err;
- if ((err = snd_intel8x0m_ich_chip_init(chip, probing)) < 0)
+ err = snd_intel8x0m_ich_chip_init(chip, probing);
+ if (err < 0)
return err;
iagetword(chip, 0); /* clear semaphore flag */
@@ -1125,7 +1129,8 @@ static int snd_intel8x0m_create(struct snd_card *card,
*r_intel8x0m = NULL;
- if ((err = pci_enable_device(pci)) < 0)
+ err = pci_enable_device(pci);
+ if (err < 0)
return err;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
@@ -1139,7 +1144,8 @@ static int snd_intel8x0m_create(struct snd_card *card,
chip->pci = pci;
chip->irq = -1;
- if ((err = pci_request_regions(pci, card->shortname)) < 0) {
+ err = pci_request_regions(pci, card->shortname);
+ if (err < 0) {
kfree(chip);
pci_disable_device(pci);
return err;
@@ -1224,12 +1230,14 @@ static int snd_intel8x0m_create(struct snd_card *card,
chip->int_sta_reg = ICH_REG_GLOB_STA;
chip->int_sta_mask = int_sta_masks;
- if ((err = snd_intel8x0m_chip_init(chip, 1)) < 0) {
+ err = snd_intel8x0m_chip_init(chip, 1);
+ if (err < 0) {
snd_intel8x0m_free(chip);
return err;
}
- 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_intel8x0m_free(chip);
return err;
}
@@ -1286,17 +1294,20 @@ static int snd_intel8x0m_probe(struct pci_dev *pci,
}
strcat(card->shortname," Modem");
- if ((err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip)) < 0) {
+ err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip);
+ if (err < 0) {
snd_card_free(card);
return err;
}
card->private_data = chip;
- if ((err = snd_intel8x0m_mixer(chip, ac97_clock)) < 0) {
+ err = snd_intel8x0m_mixer(chip, ac97_clock);
+ if (err < 0) {
snd_card_free(card);
return err;
}
- if ((err = snd_intel8x0m_pcm(chip)) < 0) {
+ err = snd_intel8x0m_pcm(chip);
+ if (err < 0) {
snd_card_free(card);
return err;
}
@@ -1306,7 +1317,8 @@ static int snd_intel8x0m_probe(struct pci_dev *pci,
sprintf(card->longname, "%s at irq %i",
card->shortname, chip->irq);
- 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] 3+ messages in thread* [PATCH 2/2] ALSA: intel8x0m: Use common error handling code in two functions
2017-11-15 21:04 [PATCH 0/2] ALSA: intel8x0m: Fine-tuning for five function implementations SF Markus Elfring
2017-11-15 21:05 ` [PATCH 1/2] ALSA: intel8x0m: Adjust 12 function calls together with a variable assignment SF Markus Elfring
@ 2017-11-15 21:06 ` SF Markus Elfring
1 sibling, 0 replies; 3+ messages in thread
From: SF Markus Elfring @ 2017-11-15 21:06 UTC (permalink / raw)
To: alsa-devel, Arvind Yadav, Bhumika Goyal, Jaroslav Kysela, Takashi Iwai
Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 15 Nov 2017 21:52:00 +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/intel8x0m.c | 76 ++++++++++++++++++++++++++-------------------------
1 file changed, 39 insertions(+), 37 deletions(-)
diff --git a/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
index ab798533a6bc..3ff994996255 100644
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -1135,8 +1135,8 @@ static int snd_intel8x0m_create(struct snd_card *card,
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL) {
- pci_disable_device(pci);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto disable_device;
}
spin_lock_init(&chip->reg_lock);
chip->device_type = device_type;
@@ -1147,8 +1147,7 @@ static int snd_intel8x0m_create(struct snd_card *card,
err = pci_request_regions(pci, card->shortname);
if (err < 0) {
kfree(chip);
- pci_disable_device(pci);
- return err;
+ goto disable_device;
}
if (device_type == DEVICE_ALI) {
@@ -1163,8 +1162,7 @@ static int snd_intel8x0m_create(struct snd_card *card,
chip->addr = pci_iomap(pci, 0, 0);
if (!chip->addr) {
dev_err(card->dev, "AC'97 space ioremap problem\n");
- snd_intel8x0m_free(chip);
- return -EIO;
+ goto e_io;
}
if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) /* ICH4 */
chip->bmaddr = pci_iomap(pci, 3, 0);
@@ -1172,16 +1170,15 @@ static int snd_intel8x0m_create(struct snd_card *card,
chip->bmaddr = pci_iomap(pci, 1, 0);
if (!chip->bmaddr) {
dev_err(card->dev, "Controller space ioremap problem\n");
- snd_intel8x0m_free(chip);
- return -EIO;
+ goto e_io;
}
port_inited:
if (request_irq(pci->irq, snd_intel8x0m_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
- snd_intel8x0m_free(chip);
- return -EBUSY;
+ err = -EBUSY;
+ goto free_sound_chip;
}
chip->irq = pci->irq;
pci_set_master(pci);
@@ -1215,8 +1212,8 @@ static int snd_intel8x0m_create(struct snd_card *card,
if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
&chip->bdbars) < 0) {
- snd_intel8x0m_free(chip);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto free_sound_chip;
}
/* tables must be aligned to 8 bytes here, but the kernel pages
are much bigger, so we don't care (on i386) */
@@ -1231,19 +1228,25 @@ static int snd_intel8x0m_create(struct snd_card *card,
chip->int_sta_mask = int_sta_masks;
err = snd_intel8x0m_chip_init(chip, 1);
- if (err < 0) {
- snd_intel8x0m_free(chip);
- return err;
- }
+ if (err < 0)
+ goto free_sound_chip;
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
- if (err < 0) {
- snd_intel8x0m_free(chip);
- return err;
- }
+ if (err < 0)
+ goto free_sound_chip;
*r_intel8x0m = chip;
return 0;
+
+disable_device:
+ pci_disable_device(pci);
+ return err;
+
+e_io:
+ err = -EIO;
+free_sound_chip:
+ snd_intel8x0m_free(chip);
+ return err;
}
static struct shortname_table {
@@ -1295,35 +1298,34 @@ static int snd_intel8x0m_probe(struct pci_dev *pci,
strcat(card->shortname," Modem");
err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
card->private_data = chip;
err = snd_intel8x0m_mixer(chip, ac97_clock);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
err = snd_intel8x0m_pcm(chip);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
-
+ if (err < 0)
+ goto free_card;
+
snd_intel8x0m_proc_init(chip);
sprintf(card->longname, "%s at irq %i",
card->shortname, chip->irq);
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);
return 0;
+
+free_card:
+ snd_card_free(card);
+ return err;
}
static void snd_intel8x0m_remove(struct pci_dev *pci)
--
2.15.0
^ permalink raw reply [flat|nested] 3+ messages in thread