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Subject[PATCH 1/3] ALSA: es1938: Adjust 14 function calls together with a variable assignment
From
Date
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 14 Nov 2017 21:00:32 +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/es1938.c | 54 +++++++++++++++++++++++++++++++++++-------------------
1 file changed, 35 insertions(+), 19 deletions(-)

diff --git a/sound/pci/es1938.c b/sound/pci/es1938.c
index 9d248eb2e26c..83d652bdef51 100644
--- a/sound/pci/es1938.c
+++ b/sound/pci/es1938.c
@@ -312,7 +312,8 @@ static void snd_es1938_write_cmd(struct es1938 *chip, unsigned char cmd)
int i;
unsigned char v;
for (i = 0; i < WRITE_LOOP_TIMEOUT; i++) {
- if (!(v = inb(SLSB_REG(chip, READSTATUS)) & 0x80)) {
+ v = inb(SLSB_REG(chip, READSTATUS));
+ if (!(v & 0x80)) {
outb(cmd, SLSB_REG(chip, WRITEDATA));
return;
}
@@ -328,9 +329,13 @@ static int snd_es1938_get_byte(struct es1938 *chip)
{
int i;
unsigned char v;
- for (i = GET_LOOP_TIMEOUT; i; i--)
- if ((v = inb(SLSB_REG(chip, STATUS))) & 0x80)
+
+ for (i = GET_LOOP_TIMEOUT; i; i--) {
+ v = inb(SLSB_REG(chip, STATUS));
+ if (v & 0x80)
return inb(SLSB_REG(chip, READDATA));
+ }
+
dev_err(chip->card->dev, "get_byte timeout: status 0x02%x\n", v);
return -ENODEV;
}
@@ -885,11 +890,10 @@ static int snd_es1938_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)

{
- int err;
+ int err = snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));

- if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
- return err;
- return 0;
+ return (err < 0) ? err : 0;
}

static int snd_es1938_pcm_hw_free(struct snd_pcm_substream *substream)
@@ -1035,9 +1039,9 @@ static const struct snd_pcm_ops snd_es1938_capture_ops = {
static int snd_es1938_new_pcm(struct es1938 *chip, int device)
{
struct snd_pcm *pcm;
- int err;
+ int err = snd_pcm_new(chip->card, "es-1938-1946", device, 2, 1, &pcm);

- if ((err = snd_pcm_new(chip->card, "es-1938-1946", device, 2, 1, &pcm)) < 0)
+ if (err < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1938_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1938_capture_ops);
@@ -1594,7 +1598,8 @@ static int snd_es1938_create(struct snd_card *card,
*rchip = NULL;

/* enable PCI device */
- if ((err = pci_enable_device(pci)) < 0)
+ err = pci_enable_device(pci);
+ if (err < 0)
return err;
/* check, if we can restrict PCI DMA transfers to 24 bits */
if (dma_set_mask(&pci->dev, DMA_BIT_MASK(24)) < 0 ||
@@ -1615,7 +1620,8 @@ static int snd_es1938_create(struct snd_card *card,
chip->card = card;
chip->pci = pci;
chip->irq = -1;
- if ((err = pci_request_regions(pci, "ESS Solo-1")) < 0) {
+ err = pci_request_regions(pci, "ESS Solo-1");
+ if (err < 0) {
kfree(chip);
pci_disable_device(pci);
return err;
@@ -1640,7 +1646,8 @@ static int snd_es1938_create(struct snd_card *card,

snd_es1938_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_es1938_free(chip);
return err;
}
@@ -1771,7 +1778,9 @@ static int snd_es1938_mixer(struct es1938 *chip)
kctl->private_free = snd_es1938_hwv_free;
break;
}
- if ((err = snd_ctl_add(card, kctl)) < 0)
+
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
}
return 0;
@@ -1805,7 +1814,9 @@ static int snd_es1938_probe(struct pci_dev *pci,
return -ENODEV;
}
}
- if ((err = snd_es1938_create(card, pci, &chip)) < 0) {
+
+ err = snd_es1938_create(card, pci, &chip);
+ if (err < 0) {
snd_card_free(card);
return err;
}
@@ -1818,11 +1829,13 @@ static int snd_es1938_probe(struct pci_dev *pci,
chip->revision,
chip->irq);

- if ((err = snd_es1938_new_pcm(chip, 0)) < 0) {
+ err = snd_es1938_new_pcm(chip, 0);
+ if (err < 0) {
snd_card_free(card);
return err;
}
- if ((err = snd_es1938_mixer(chip)) < 0) {
+ err = snd_es1938_mixer(chip);
+ if (err < 0) {
snd_card_free(card);
return err;
}
@@ -1833,11 +1846,13 @@ static int snd_es1938_probe(struct pci_dev *pci,
dev_err(card->dev, "OPL3 not detected at 0x%lx\n",
SLSB_REG(chip, FMLOWADDR));
} else {
- if ((err = snd_opl3_timer_new(opl3, 0, 1)) < 0) {
+ err = snd_opl3_timer_new(opl3, 0, 1);
+ 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;
}
@@ -1855,7 +1870,8 @@ static int snd_es1938_probe(struct pci_dev *pci,

snd_es1938_create_gameport(chip);

- if ((err = snd_card_register(card)) < 0) {
+ err = snd_card_register(card);
+ if (err < 0) {
snd_card_free(card);
return err;
}
--
2.15.0
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