* [PATCH 1/4] ALSA: cs46xx: Adjust 33 function calls together with a variable assignment
2017-11-13 18:21 [PATCH 0/4] ALSA: cs46xx: Adjustments for some function implementations SF Markus Elfring
@ 2017-11-13 18:22 ` SF Markus Elfring
2017-11-13 18:30 ` Dan Carpenter
2017-11-13 18:23 ` [PATCH 2/4] ALSA: cs46xx: Use common error handling code in two functions SF Markus Elfring
` (2 subsequent siblings)
3 siblings, 1 reply; 6+ messages in thread
From: SF Markus Elfring @ 2017-11-13 18:22 UTC (permalink / raw)
To: alsa-devel, Bhumika Goyal, Dan Carpenter, Fabian Frederick,
Jaroslav Kysela, Takashi Iwai, Takashi Sakamoto
Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 13 Nov 2017 18:50:19 +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/cs46xx/cs46xx.c | 31 ++++++++++------
sound/pci/cs46xx/cs46xx_lib.c | 71 ++++++++++++++++++++++++-------------
sound/pci/cs46xx/dsp_spos.c | 29 ++++++++++-----
sound/pci/cs46xx/dsp_spos_scb_lib.c | 7 ++--
4 files changed, 92 insertions(+), 46 deletions(-)
diff --git a/sound/pci/cs46xx/cs46xx.c b/sound/pci/cs46xx/cs46xx.c
index 655fbea1692c..520478a6e605 100644
--- a/sound/pci/cs46xx/cs46xx.c
+++ b/sound/pci/cs46xx/cs46xx.c
@@ -92,45 +92,53 @@ static int snd_card_cs46xx_probe(struct pci_dev *pci,
0, &card);
if (err < 0)
return err;
- if ((err = snd_cs46xx_create(card, pci,
- external_amp[dev], thinkpad[dev],
- &chip)) < 0) {
+
+ err = snd_cs46xx_create(card, pci, external_amp[dev],
+ thinkpad[dev], &chip);
+ if (err < 0) {
snd_card_free(card);
return err;
}
card->private_data = chip;
chip->accept_valid = mmap_valid[dev];
- if ((err = snd_cs46xx_pcm(chip, 0)) < 0) {
+ err = snd_cs46xx_pcm(chip, 0);
+ if (err < 0) {
snd_card_free(card);
return err;
}
#ifdef CONFIG_SND_CS46XX_NEW_DSP
- if ((err = snd_cs46xx_pcm_rear(chip, 1)) < 0) {
+ err = snd_cs46xx_pcm_rear(chip, 1);
+ if (err < 0) {
snd_card_free(card);
return err;
}
- if ((err = snd_cs46xx_pcm_iec958(chip, 2)) < 0) {
+ err = snd_cs46xx_pcm_iec958(chip, 2);
+ if (err < 0) {
snd_card_free(card);
return err;
}
#endif
- if ((err = snd_cs46xx_mixer(chip, 2)) < 0) {
+ err = snd_cs46xx_mixer(chip, 2);
+ if (err < 0) {
snd_card_free(card);
return err;
}
#ifdef CONFIG_SND_CS46XX_NEW_DSP
if (chip->nr_ac97_codecs ==2) {
- if ((err = snd_cs46xx_pcm_center_lfe(chip, 3)) < 0) {
+ err = snd_cs46xx_pcm_center_lfe(chip, 3);
+ if (err < 0) {
snd_card_free(card);
return err;
}
}
#endif
- if ((err = snd_cs46xx_midi(chip, 0)) < 0) {
+ err = snd_cs46xx_midi(chip, 0);
+ if (err < 0) {
snd_card_free(card);
return err;
}
- if ((err = snd_cs46xx_start_dsp(chip)) < 0) {
+ err = snd_cs46xx_start_dsp(chip);
+ if (err < 0) {
snd_card_free(card);
return err;
}
@@ -146,7 +154,8 @@ static int snd_card_cs46xx_probe(struct pci_dev *pci,
chip->ba1_addr,
chip->irq);
- if ((err = snd_card_register(card)) < 0) {
+ err = snd_card_register(card);
+ if (err < 0) {
snd_card_free(card);
return err;
}
diff --git a/sound/pci/cs46xx/cs46xx_lib.c b/sound/pci/cs46xx/cs46xx_lib.c
index 0020fd0efc46..164f86949b2d 100644
--- a/sound/pci/cs46xx/cs46xx_lib.c
+++ b/sound/pci/cs46xx/cs46xx_lib.c
@@ -1071,10 +1071,14 @@ static int _cs46xx_adjust_sample_rate (struct snd_cs46xx *chip, struct snd_cs46x
if ((int)cpcm->pcm_channel->sample_rate != sample_rate) {
int unlinked = cpcm->pcm_channel->unlinked;
cs46xx_dsp_destroy_pcm_channel (chip,cpcm->pcm_channel);
-
- if ( (cpcm->pcm_channel = cs46xx_dsp_create_pcm_channel (chip, sample_rate, cpcm,
- cpcm->hw_buf.addr,
- cpcm->pcm_channel_id)) == NULL) {
+ cpcm
+ ->pcm_channel = cs46xx_dsp_create_pcm_channel(chip,
+ sample_rate,
+ cpcm,
+ cpcm->hw_buf.addr,
+ cpcm
+ ->pcm_channel_id);
+ if (!cpcm->pcm_channel) {
dev_err(chip->card->dev,
"failed to re-create virtual PCM channel\n");
return -ENOMEM;
@@ -1161,7 +1165,10 @@ static int snd_cs46xx_playback_hw_params(struct snd_pcm_substream *substream,
runtime->dma_addr = 0;
runtime->dma_bytes = 0;
}
- if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0) {
+
+ err = snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+ if (err < 0) {
#ifdef CONFIG_SND_CS46XX_NEW_DSP
mutex_unlock(&chip->spos_mutex);
#endif
@@ -1309,7 +1316,10 @@ static int snd_cs46xx_capture_hw_params(struct snd_pcm_substream *substream,
runtime->dma_addr = 0;
runtime->dma_bytes = 0;
}
- if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
+
+ err = snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+ if (err < 0)
return err;
substream->ops = &snd_cs46xx_capture_indirect_ops;
}
@@ -1780,9 +1790,10 @@ static const struct snd_pcm_ops snd_cs46xx_capture_indirect_ops = {
int snd_cs46xx_pcm(struct snd_cs46xx *chip, int device)
{
struct snd_pcm *pcm;
- int err;
+ int err = snd_pcm_new(chip->card, "CS46xx", device,
+ MAX_PLAYBACK_CHANNELS, 1, &pcm);
- if ((err = snd_pcm_new(chip->card, "CS46xx", device, MAX_PLAYBACK_CHANNELS, 1, &pcm)) < 0)
+ if (err < 0)
return err;
pcm->private_data = chip;
@@ -1806,9 +1817,10 @@ int snd_cs46xx_pcm(struct snd_cs46xx *chip, int device)
int snd_cs46xx_pcm_rear(struct snd_cs46xx *chip, int device)
{
struct snd_pcm *pcm;
- int err;
+ int err = snd_pcm_new(chip->card, "CS46xx - Rear",
+ device, MAX_PLAYBACK_CHANNELS, 0, &pcm);
- if ((err = snd_pcm_new(chip->card, "CS46xx - Rear", device, MAX_PLAYBACK_CHANNELS, 0, &pcm)) < 0)
+ if (err < 0)
return err;
pcm->private_data = chip;
@@ -1829,9 +1841,10 @@ int snd_cs46xx_pcm_rear(struct snd_cs46xx *chip, int device)
int snd_cs46xx_pcm_center_lfe(struct snd_cs46xx *chip, int device)
{
struct snd_pcm *pcm;
- int err;
+ int err = snd_pcm_new(chip->card, "CS46xx - Center LFE",
+ device, MAX_PLAYBACK_CHANNELS, 0, &pcm);
- if ((err = snd_pcm_new(chip->card, "CS46xx - Center LFE", device, MAX_PLAYBACK_CHANNELS, 0, &pcm)) < 0)
+ if (err < 0)
return err;
pcm->private_data = chip;
@@ -1852,9 +1865,10 @@ int snd_cs46xx_pcm_center_lfe(struct snd_cs46xx *chip, int device)
int snd_cs46xx_pcm_iec958(struct snd_cs46xx *chip, int device)
{
struct snd_pcm *pcm;
- int err;
+ int err = snd_pcm_new(chip->card, "CS46xx - IEC958",
+ device, 1, 0, &pcm);
- if ((err = snd_pcm_new(chip->card, "CS46xx - IEC958", device, 1, 0, &pcm)) < 0)
+ if (err < 0)
return err;
pcm->private_data = chip;
@@ -2432,7 +2446,8 @@ static void snd_cs46xx_codec_reset (struct snd_ac97 * ac97)
/* test if we can write to the record gain volume register */
snd_ac97_write(ac97, AC97_REC_GAIN, 0x8a05);
- if ((err = snd_ac97_read(ac97, AC97_REC_GAIN)) == 0x8a05)
+ err = snd_ac97_read(ac97, AC97_REC_GAIN);
+ if (err == 0x8a05)
return;
msleep(10);
@@ -2494,7 +2509,8 @@ int snd_cs46xx_mixer(struct snd_cs46xx *chip, int spdif_device)
/* detect primary codec */
chip->nr_ac97_codecs = 0;
dev_dbg(chip->card->dev, "detecting primary codec\n");
- if ((err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus)) < 0)
+ err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus);
+ if (err < 0)
return err;
chip->ac97_bus->private_free = snd_cs46xx_mixer_free_ac97_bus;
@@ -2515,7 +2531,9 @@ int snd_cs46xx_mixer(struct snd_cs46xx *chip, int spdif_device)
kctl = snd_ctl_new1(&snd_cs46xx_controls[idx], chip);
if (kctl && kctl->id.iface == SNDRV_CTL_ELEM_IFACE_PCM)
kctl->id.device = spdif_device;
- if ((err = snd_ctl_add(card, kctl)) < 0)
+
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
}
@@ -2700,9 +2718,9 @@ static const struct snd_rawmidi_ops snd_cs46xx_midi_input =
int snd_cs46xx_midi(struct snd_cs46xx *chip, int device)
{
struct snd_rawmidi *rmidi;
- int err;
+ int err = snd_rawmidi_new(chip->card, "CS46XX", device, 1, 1, &rmidi);
- if ((err = snd_rawmidi_new(chip->card, "CS46XX", device, 1, 1, &rmidi)) < 0)
+ if (err < 0)
return err;
strcpy(rmidi->name, "CS46XX");
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_cs46xx_midi_output);
@@ -3544,7 +3562,8 @@ static void hercules_mixer_init (struct snd_cs46xx *chip)
struct snd_kcontrol *kctl;
kctl = snd_ctl_new1(&snd_hercules_controls[idx], chip);
- if ((err = snd_ctl_add(card, kctl)) < 0) {
+ err = snd_ctl_add(card, kctl);
+ if (err < 0) {
dev_err(card->dev,
"failed to initialize Hercules mixer (%d)\n",
err);
@@ -3895,7 +3914,8 @@ int snd_cs46xx_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;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
@@ -3989,8 +4009,10 @@ int snd_cs46xx_create(struct snd_card *card,
for (idx = 0; idx < 5; idx++) {
region = &chip->region.idx[idx];
- if ((region->resource = request_mem_region(region->base, region->size,
- region->name)) == NULL) {
+ region->resource = request_mem_region(region->base,
+ region->size,
+ region->name);
+ if (!region->resource) {
dev_err(chip->card->dev,
"unable to request memory region 0x%lx-0x%lx\n",
region->base, region->base + region->size - 1);
@@ -4028,7 +4050,8 @@ int snd_cs46xx_create(struct snd_card *card,
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_cs46xx_free(chip);
return err;
}
diff --git a/sound/pci/cs46xx/dsp_spos.c b/sound/pci/cs46xx/dsp_spos.c
index aa61615288ff..c30bb557468c 100644
--- a/sound/pci/cs46xx/dsp_spos.c
+++ b/sound/pci/cs46xx/dsp_spos.c
@@ -627,7 +627,9 @@ static void cs46xx_dsp_proc_parameter_dump_read (struct snd_info_entry *entry,
col = 0;
}
- if ( (symbol = cs46xx_dsp_lookup_symbol_addr (chip,i / sizeof(u32), SYMBOL_PARAMETER)) != NULL) {
+ symbol = cs46xx_dsp_lookup_symbol_addr(chip, i / sizeof(u32),
+ SYMBOL_PARAMETER);
+ if (symbol) {
col = 0;
snd_iprintf (buffer,"\n%s:\n",symbol->symbol_name);
}
@@ -796,7 +798,8 @@ int cs46xx_dsp_proc_init (struct snd_card *card, struct snd_cs46xx *chip)
ins->snd_card = card;
- if ((entry = snd_info_create_card_entry(card, "dsp", card->proc_root)) != NULL) {
+ entry = snd_info_create_card_entry(card, "dsp", card->proc_root);
+ if (entry) {
entry->content = SNDRV_INFO_CONTENT_TEXT;
entry->mode = S_IFDIR | S_IRUGO | S_IXUGO;
@@ -811,7 +814,9 @@ int cs46xx_dsp_proc_init (struct snd_card *card, struct snd_cs46xx *chip)
if (!ins->proc_dsp_dir)
return -ENOMEM;
- if ((entry = snd_info_create_card_entry(card, "spos_symbols", ins->proc_dsp_dir)) != NULL) {
+ entry = snd_info_create_card_entry(card, "spos_symbols",
+ ins->proc_dsp_dir);
+ if (entry) {
entry->content = SNDRV_INFO_CONTENT_TEXT;
entry->private_data = chip;
entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
@@ -823,7 +828,9 @@ int cs46xx_dsp_proc_init (struct snd_card *card, struct snd_cs46xx *chip)
}
ins->proc_sym_info_entry = entry;
- if ((entry = snd_info_create_card_entry(card, "spos_modules", ins->proc_dsp_dir)) != NULL) {
+ entry = snd_info_create_card_entry(card, "spos_modules",
+ ins->proc_dsp_dir);
+ if (entry) {
entry->content = SNDRV_INFO_CONTENT_TEXT;
entry->private_data = chip;
entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
@@ -835,7 +842,9 @@ int cs46xx_dsp_proc_init (struct snd_card *card, struct snd_cs46xx *chip)
}
ins->proc_modules_info_entry = entry;
- if ((entry = snd_info_create_card_entry(card, "parameter", ins->proc_dsp_dir)) != NULL) {
+ entry = snd_info_create_card_entry(card, "parameter",
+ ins->proc_dsp_dir);
+ if (entry) {
entry->content = SNDRV_INFO_CONTENT_TEXT;
entry->private_data = chip;
entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
@@ -847,7 +856,8 @@ int cs46xx_dsp_proc_init (struct snd_card *card, struct snd_cs46xx *chip)
}
ins->proc_parameter_dump_info_entry = entry;
- if ((entry = snd_info_create_card_entry(card, "sample", ins->proc_dsp_dir)) != NULL) {
+ entry = snd_info_create_card_entry(card, "sample", ins->proc_dsp_dir);
+ if (entry) {
entry->content = SNDRV_INFO_CONTENT_TEXT;
entry->private_data = chip;
entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
@@ -859,7 +869,9 @@ int cs46xx_dsp_proc_init (struct snd_card *card, struct snd_cs46xx *chip)
}
ins->proc_sample_dump_info_entry = entry;
- if ((entry = snd_info_create_card_entry(card, "task_tree", ins->proc_dsp_dir)) != NULL) {
+ entry = snd_info_create_card_entry(card, "task_tree",
+ ins->proc_dsp_dir);
+ if (entry) {
entry->content = SNDRV_INFO_CONTENT_TEXT;
entry->private_data = chip;
entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
@@ -871,7 +883,8 @@ int cs46xx_dsp_proc_init (struct snd_card *card, struct snd_cs46xx *chip)
}
ins->proc_task_info_entry = entry;
- if ((entry = snd_info_create_card_entry(card, "scb_info", ins->proc_dsp_dir)) != NULL) {
+ entry = snd_info_create_card_entry(card, "scb_info", ins->proc_dsp_dir);
+ if (entry) {
entry->content = SNDRV_INFO_CONTENT_TEXT;
entry->private_data = chip;
entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
diff --git a/sound/pci/cs46xx/dsp_spos_scb_lib.c b/sound/pci/cs46xx/dsp_spos_scb_lib.c
index 7488e1b7a770..f9564f42eb09 100644
--- a/sound/pci/cs46xx/dsp_spos_scb_lib.c
+++ b/sound/pci/cs46xx/dsp_spos_scb_lib.c
@@ -256,9 +256,10 @@ void cs46xx_dsp_proc_register_scb_desc (struct snd_cs46xx *chip,
/* register to proc */
if (ins->snd_card != NULL && ins->proc_dsp_dir != NULL &&
scb->proc_info == NULL) {
-
- if ((entry = snd_info_create_card_entry(ins->snd_card, scb->scb_name,
- ins->proc_dsp_dir)) != NULL) {
+ entry = snd_info_create_card_entry(ins->snd_card,
+ scb->scb_name,
+ ins->proc_dsp_dir);
+ if (entry) {
scb_info = kmalloc(sizeof(struct proc_scb_info), GFP_KERNEL);
if (!scb_info) {
snd_info_free_entry(entry);
--
2.15.0
^ permalink raw reply [flat|nested] 6+ messages in thread* [PATCH 2/4] ALSA: cs46xx: Use common error handling code in two functions
2017-11-13 18:21 [PATCH 0/4] ALSA: cs46xx: Adjustments for some function implementations SF Markus Elfring
2017-11-13 18:22 ` [PATCH 1/4] ALSA: cs46xx: Adjust 33 function calls together with a variable assignment SF Markus Elfring
@ 2017-11-13 18:23 ` SF Markus Elfring
2017-11-13 18:24 ` [PATCH 3/4] ALSA: cs46xx: Improve a size determination in cs46xx_dsp_proc_register_scb_desc() SF Markus Elfring
2017-11-13 18:25 ` [PATCH 4/4] ALSA: cs46xx: Adjust 35 checks for null pointers SF Markus Elfring
3 siblings, 0 replies; 6+ messages in thread
From: SF Markus Elfring @ 2017-11-13 18:23 UTC (permalink / raw)
To: alsa-devel, Bhumika Goyal, Dan Carpenter, Fabian Frederick,
Jaroslav Kysela, Takashi Iwai, Takashi Sakamoto
Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 13 Nov 2017 18:53:11 +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/cs46xx/cs46xx.c | 64 ++++++++++++++++++-------------------------
sound/pci/cs46xx/cs46xx_lib.c | 44 ++++++++++++++---------------
2 files changed, 47 insertions(+), 61 deletions(-)
diff --git a/sound/pci/cs46xx/cs46xx.c b/sound/pci/cs46xx/cs46xx.c
index 520478a6e605..d42e7e282cab 100644
--- a/sound/pci/cs46xx/cs46xx.c
+++ b/sound/pci/cs46xx/cs46xx.c
@@ -95,54 +95,42 @@ static int snd_card_cs46xx_probe(struct pci_dev *pci,
err = snd_cs46xx_create(card, pci, external_amp[dev],
thinkpad[dev], &chip);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
card->private_data = chip;
chip->accept_valid = mmap_valid[dev];
err = snd_cs46xx_pcm(chip, 0);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
#ifdef CONFIG_SND_CS46XX_NEW_DSP
err = snd_cs46xx_pcm_rear(chip, 1);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
err = snd_cs46xx_pcm_iec958(chip, 2);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
#endif
err = snd_cs46xx_mixer(chip, 2);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+
#ifdef CONFIG_SND_CS46XX_NEW_DSP
if (chip->nr_ac97_codecs ==2) {
err = snd_cs46xx_pcm_center_lfe(chip, 3);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
}
#endif
err = snd_cs46xx_midi(chip, 0);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
- err = snd_cs46xx_start_dsp(chip);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
+ if (err < 0)
+ goto free_card;
+ err = snd_cs46xx_start_dsp(chip);
+ if (err < 0)
+ goto free_card;
snd_cs46xx_gameport(chip);
@@ -155,14 +143,16 @@ static int snd_card_cs46xx_probe(struct pci_dev *pci,
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);
dev++;
return 0;
+
+free_card:
+ snd_card_free(card);
+ return err;
}
static void snd_card_cs46xx_remove(struct pci_dev *pci)
diff --git a/sound/pci/cs46xx/cs46xx_lib.c b/sound/pci/cs46xx/cs46xx_lib.c
index 164f86949b2d..27b568f350f6 100644
--- a/sound/pci/cs46xx/cs46xx_lib.c
+++ b/sound/pci/cs46xx/cs46xx_lib.c
@@ -3937,8 +3937,7 @@ int snd_cs46xx_create(struct snd_card *card,
dev_err(chip->card->dev,
"wrong address(es) - ba0 = 0x%lx, ba1 = 0x%lx\n",
chip->ba0_addr, chip->ba1_addr);
- snd_cs46xx_free(chip);
- return -ENOMEM;
+ goto e_nomem;
}
region = &chip->region.name.ba0;
@@ -4016,59 +4015,56 @@ int snd_cs46xx_create(struct snd_card *card,
dev_err(chip->card->dev,
"unable to request memory region 0x%lx-0x%lx\n",
region->base, region->base + region->size - 1);
- snd_cs46xx_free(chip);
- return -EBUSY;
+ err = -EBUSY;
+ goto free_sound_chip;
}
region->remap_addr = ioremap_nocache(region->base, region->size);
if (region->remap_addr == NULL) {
dev_err(chip->card->dev,
"%s ioremap problem\n", region->name);
- snd_cs46xx_free(chip);
- return -ENOMEM;
+ goto e_nomem;
}
}
if (request_irq(pci->irq, snd_cs46xx_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(chip->card->dev, "unable to grab IRQ %d\n", pci->irq);
- snd_cs46xx_free(chip);
- return -EBUSY;
+ err = -EBUSY;
+ goto free_sound_chip;
}
chip->irq = pci->irq;
#ifdef CONFIG_SND_CS46XX_NEW_DSP
chip->dsp_spos_instance = cs46xx_dsp_spos_create(chip);
- if (chip->dsp_spos_instance == NULL) {
- snd_cs46xx_free(chip);
- return -ENOMEM;
- }
+ if (!chip->dsp_spos_instance)
+ goto e_nomem;
#endif
err = snd_cs46xx_chip_init(chip);
- if (err < 0) {
- snd_cs46xx_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_cs46xx_free(chip);
- return err;
- }
+ if (err < 0)
+ goto free_sound_chip;
snd_cs46xx_proc_init(card, chip);
#ifdef CONFIG_PM_SLEEP
chip->saved_regs = kmalloc(sizeof(*chip->saved_regs) *
ARRAY_SIZE(saved_regs), GFP_KERNEL);
- if (!chip->saved_regs) {
- snd_cs46xx_free(chip);
- return -ENOMEM;
- }
+ if (!chip->saved_regs)
+ goto e_nomem;
#endif
chip->active_ctrl(chip, -1); /* disable CLKRUN */
*rchip = chip;
return 0;
+
+e_nomem:
+ err = -ENOMEM;
+free_sound_chip:
+ snd_cs46xx_free(chip);
+ return err;
}
--
2.15.0
^ permalink raw reply [flat|nested] 6+ messages in thread* [PATCH 4/4] ALSA: cs46xx: Adjust 35 checks for null pointers
2017-11-13 18:21 [PATCH 0/4] ALSA: cs46xx: Adjustments for some function implementations SF Markus Elfring
` (2 preceding siblings ...)
2017-11-13 18:24 ` [PATCH 3/4] ALSA: cs46xx: Improve a size determination in cs46xx_dsp_proc_register_scb_desc() SF Markus Elfring
@ 2017-11-13 18:25 ` SF Markus Elfring
3 siblings, 0 replies; 6+ messages in thread
From: SF Markus Elfring @ 2017-11-13 18:25 UTC (permalink / raw)
To: alsa-devel, Bhumika Goyal, Dan Carpenter, Fabian Frederick,
Jaroslav Kysela, Takashi Iwai, Takashi Sakamoto
Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 13 Nov 2017 19:03:29 +0100
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The script “checkpatch.pl” pointed information out like the following.
Comparison to NULL could be written …
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
sound/pci/cs46xx/cs46xx_lib.c | 21 +++++++++++----------
sound/pci/cs46xx/dsp_spos.c | 31 +++++++++++++++----------------
sound/pci/cs46xx/dsp_spos_scb_lib.c | 27 +++++++++++----------------
3 files changed, 37 insertions(+), 42 deletions(-)
diff --git a/sound/pci/cs46xx/cs46xx_lib.c b/sound/pci/cs46xx/cs46xx_lib.c
index 27b568f350f6..ddbd33dca4bc 100644
--- a/sound/pci/cs46xx/cs46xx_lib.c
+++ b/sound/pci/cs46xx/cs46xx_lib.c
@@ -1057,10 +1057,10 @@ static int _cs46xx_adjust_sample_rate (struct snd_cs46xx *chip, struct snd_cs46x
{
/* If PCMReaderSCB and SrcTaskSCB not created yet ... */
- if ( cpcm->pcm_channel == NULL) {
+ if (!cpcm->pcm_channel) {
cpcm->pcm_channel = cs46xx_dsp_create_pcm_channel (chip, sample_rate,
cpcm, cpcm->hw_buf.addr,cpcm->pcm_channel_id);
- if (cpcm->pcm_channel == NULL) {
+ if (!cpcm->pcm_channel) {
dev_err(chip->card->dev,
"failed to create virtual PCM channel\n");
return -ENOMEM;
@@ -1514,7 +1514,7 @@ static int _cs46xx_playback_open_channel (struct snd_pcm_substream *substream,in
struct snd_pcm_runtime *runtime = substream->runtime;
cpcm = kzalloc(sizeof(*cpcm), GFP_KERNEL);
- if (cpcm == NULL)
+ if (!cpcm)
return -ENOMEM;
if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
PAGE_SIZE, &cpcm->hw_buf) < 0) {
@@ -2063,7 +2063,7 @@ static int snd_cs46xx_adc_capture_get(struct snd_kcontrol *kcontrol,
struct snd_cs46xx *chip = snd_kcontrol_chip(kcontrol);
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
- if (ins->adc_input != NULL)
+ if (ins->adc_input)
ucontrol->value.integer.value[0] = 1;
else
ucontrol->value.integer.value[0] = 0;
@@ -2094,7 +2094,7 @@ static int snd_cs46xx_pcm_capture_get(struct snd_kcontrol *kcontrol,
struct snd_cs46xx *chip = snd_kcontrol_chip(kcontrol);
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
- if (ins->pcm_input != NULL)
+ if (ins->pcm_input)
ucontrol->value.integer.value[0] = 1;
else
ucontrol->value.integer.value[0] = 0;
@@ -3643,7 +3643,7 @@ static void clkrun_init(struct snd_cs46xx *chip)
pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
- if (pdev == NULL)
+ if (!pdev)
return; /* Not a thinkpad thats for sure */
/* Find the control port */
@@ -3919,7 +3919,7 @@ int snd_cs46xx_create(struct snd_card *card,
return err;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (chip == NULL) {
+ if (!chip) {
pci_disable_device(pci);
return -ENOMEM;
}
@@ -3997,9 +3997,10 @@ int snd_cs46xx_create(struct snd_card *card,
clkrun_init(chip);
}
- if (chip->amplifier_ctrl == NULL)
+ if (!chip->amplifier_ctrl)
chip->amplifier_ctrl = amp_none;
- if (chip->active_ctrl == NULL)
+
+ if (!chip->active_ctrl)
chip->active_ctrl = amp_none;
chip->active_ctrl(chip, 1); /* enable CLKRUN */
@@ -4019,7 +4020,7 @@ int snd_cs46xx_create(struct snd_card *card,
goto free_sound_chip;
}
region->remap_addr = ioremap_nocache(region->base, region->size);
- if (region->remap_addr == NULL) {
+ if (!region->remap_addr) {
dev_err(chip->card->dev,
"%s ioremap problem\n", region->name);
goto e_nomem;
diff --git a/sound/pci/cs46xx/dsp_spos.c b/sound/pci/cs46xx/dsp_spos.c
index c30bb557468c..63a212f3bc58 100644
--- a/sound/pci/cs46xx/dsp_spos.c
+++ b/sound/pci/cs46xx/dsp_spos.c
@@ -236,7 +236,7 @@ struct dsp_spos_instance *cs46xx_dsp_spos_create (struct snd_cs46xx * chip)
{
struct dsp_spos_instance * ins = kzalloc(sizeof(struct dsp_spos_instance), GFP_KERNEL);
- if (ins == NULL)
+ if (!ins)
return NULL;
/* better to use vmalloc for this big table */
@@ -402,7 +402,7 @@ int cs46xx_dsp_load_module (struct snd_cs46xx * chip, struct dsp_module_desc * m
snd_cs46xx_clear_BA1(chip, DSP_CODE_BYTE_OFFSET, DSP_CODE_BYTE_SIZE);
}
- if (code == NULL) {
+ if (!code) {
dev_dbg(chip->card->dev,
"dsp_spos: module got no code segment\n");
} else {
@@ -514,10 +514,8 @@ static void cs46xx_dsp_proc_symbol_table_read (struct snd_info_entry *entry,
if (ins->symbol_table.symbols[i].deleted)
continue;
- if (ins->symbol_table.symbols[i].module != NULL) {
+ if (ins->symbol_table.symbols[i].module)
module_str = ins->symbol_table.symbols[i].module->module_name;
- }
-
snd_iprintf(buffer, "%04X <%02X> %s [%s]\n",
ins->symbol_table.symbols[i].address,
@@ -593,11 +591,12 @@ static void cs46xx_dsp_proc_scb_read (struct snd_info_entry *entry,
continue;
snd_iprintf(buffer,"\n%04x %s:\n\n",ins->scbs[i].address,ins->scbs[i].scb_name);
- if (ins->scbs[i].parent_scb_ptr != NULL) {
+ if (ins->scbs[i].parent_scb_ptr)
snd_iprintf(buffer,"parent [%s:%04x] ",
ins->scbs[i].parent_scb_ptr->scb_name,
ins->scbs[i].parent_scb_ptr->address);
- } else snd_iprintf(buffer,"parent [none] ");
+ else
+ snd_iprintf(buffer, "parent [none] ");
snd_iprintf(buffer,"sub_list_ptr [%s:%04x]\nnext_scb_ptr [%s:%04x] task_entry [%s:%04x]\n",
ins->scbs[i].sub_list_ptr->scb_name,
@@ -1141,35 +1140,35 @@ int cs46xx_dsp_scb_and_task_init (struct snd_cs46xx *chip)
cs46xx_dsp_create_task_tree(chip, "sposCB", (u32 *)&sposcb, SPOSCB_ADDR, 0x10);
null_algorithm = cs46xx_dsp_lookup_symbol(chip, "NULLALGORITHM", SYMBOL_CODE);
- if (null_algorithm == NULL) {
+ if (!null_algorithm) {
dev_err(chip->card->dev,
"dsp_spos: symbol NULLALGORITHM not found\n");
return -EIO;
}
fg_task_tree_header_code = cs46xx_dsp_lookup_symbol(chip, "FGTASKTREEHEADERCODE", SYMBOL_CODE);
- if (fg_task_tree_header_code == NULL) {
+ if (!fg_task_tree_header_code) {
dev_err(chip->card->dev,
"dsp_spos: symbol FGTASKTREEHEADERCODE not found\n");
return -EIO;
}
task_tree_header_code = cs46xx_dsp_lookup_symbol(chip, "TASKTREEHEADERCODE", SYMBOL_CODE);
- if (task_tree_header_code == NULL) {
+ if (!task_tree_header_code) {
dev_err(chip->card->dev,
"dsp_spos: symbol TASKTREEHEADERCODE not found\n");
return -EIO;
}
task_tree_thread = cs46xx_dsp_lookup_symbol(chip, "TASKTREETHREAD", SYMBOL_CODE);
- if (task_tree_thread == NULL) {
+ if (!task_tree_thread) {
dev_err(chip->card->dev,
"dsp_spos: symbol TASKTREETHREAD not found\n");
return -EIO;
}
magic_snoop_task = cs46xx_dsp_lookup_symbol(chip, "MAGICSNOOPTASK", SYMBOL_CODE);
- if (magic_snoop_task == NULL) {
+ if (!magic_snoop_task) {
dev_err(chip->card->dev,
"dsp_spos: symbol MAGICSNOOPTASK not found\n");
return -EIO;
@@ -1532,20 +1531,20 @@ static int cs46xx_dsp_async_init (struct snd_cs46xx *chip,
struct dsp_scb_descriptor * spdifi_scb_desc, * spdifo_scb_desc, * async_codec_scb_desc;
s16_async_codec_input_task = cs46xx_dsp_lookup_symbol(chip, "S16_ASYNCCODECINPUTTASK", SYMBOL_CODE);
- if (s16_async_codec_input_task == NULL) {
+ if (!s16_async_codec_input_task) {
dev_err(chip->card->dev,
"dsp_spos: symbol S16_ASYNCCODECINPUTTASK not found\n");
return -EIO;
}
spdifo_task = cs46xx_dsp_lookup_symbol(chip, "SPDIFOTASK", SYMBOL_CODE);
- if (spdifo_task == NULL) {
+ if (!spdifo_task) {
dev_err(chip->card->dev,
"dsp_spos: symbol SPDIFOTASK not found\n");
return -EIO;
}
spdifi_task = cs46xx_dsp_lookup_symbol(chip, "SPDIFITASK", SYMBOL_CODE);
- if (spdifi_task == NULL) {
+ if (!spdifi_task) {
dev_err(chip->card->dev,
"dsp_spos: symbol SPDIFITASK not found\n");
return -EIO;
@@ -1971,7 +1970,7 @@ int cs46xx_dsp_set_iec958_volume (struct snd_cs46xx * chip, u16 left, u16 right)
mutex_lock(&chip->spos_mutex);
- if (ins->asynch_rx_scb != NULL)
+ if (ins->asynch_rx_scb)
cs46xx_dsp_scb_set_volume (chip,ins->asynch_rx_scb,
left,right);
diff --git a/sound/pci/cs46xx/dsp_spos_scb_lib.c b/sound/pci/cs46xx/dsp_spos_scb_lib.c
index bccd315e6c18..e42f402fbe4d 100644
--- a/sound/pci/cs46xx/dsp_spos_scb_lib.c
+++ b/sound/pci/cs46xx/dsp_spos_scb_lib.c
@@ -93,7 +93,7 @@ static void cs46xx_dsp_proc_scb_info_read (struct snd_info_entry *entry,
snd_iprintf(buffer,"\n");
- if (scb->parent_scb_ptr != NULL) {
+ if (scb->parent_scb_ptr) {
snd_iprintf(buffer,"parent [%s:%04x] ",
scb->parent_scb_ptr->scb_name,
scb->parent_scb_ptr->address);
@@ -254,8 +254,7 @@ void cs46xx_dsp_proc_register_scb_desc (struct snd_cs46xx *chip,
struct proc_scb_info * scb_info;
/* register to proc */
- if (ins->snd_card != NULL && ins->proc_dsp_dir != NULL &&
- scb->proc_info == NULL) {
+ if (ins->snd_card && ins->proc_dsp_dir && !scb->proc_info) {
entry = snd_info_create_card_entry(ins->snd_card,
scb->scb_name,
ins->proc_dsp_dir);
@@ -376,8 +375,7 @@ cs46xx_dsp_create_generic_scb (struct snd_cs46xx *chip, char * name, u32 * scb_d
task_entry = cs46xx_dsp_lookup_symbol (chip,task_entry_name,
SYMBOL_CODE);
-
- if (task_entry == NULL) {
+ if (!task_entry) {
dev_err(chip->card->dev,
"dsp_spos: symbol %s not found\n", task_entry_name);
return NULL;
@@ -588,11 +586,10 @@ cs46xx_dsp_create_pcm_reader_scb(struct snd_cs46xx * chip, char * scb_name,
}
};
- if (ins->null_algorithm == NULL) {
+ if (!ins->null_algorithm) {
ins->null_algorithm = cs46xx_dsp_lookup_symbol (chip,"NULLALGORITHM",
SYMBOL_CODE);
-
- if (ins->null_algorithm == NULL) {
+ if (!ins->null_algorithm) {
dev_err(chip->card->dev,
"dsp_spos: symbol NULLALGORITHM not found\n");
return NULL;
@@ -678,11 +675,10 @@ cs46xx_dsp_create_src_task_scb(struct snd_cs46xx * chip, char * scb_name,
}
};
- if (ins->s16_up == NULL) {
+ if (!ins->s16_up) {
ins->s16_up = cs46xx_dsp_lookup_symbol (chip,"S16_UPSRC",
SYMBOL_CODE);
-
- if (ins->s16_up == NULL) {
+ if (!ins->s16_up) {
dev_err(chip->card->dev,
"dsp_spos: symbol S16_UPSRC not found\n");
return NULL;
@@ -1292,9 +1288,8 @@ cs46xx_dsp_create_pcm_channel (struct snd_cs46xx * chip,
if (!sample_rate) sample_rate = 44100;
/* search for a already created SRC SCB with the same sample rate */
- for (i = 0; i < DSP_MAX_PCM_CHANNELS &&
- (pcm_index == -1 || src_scb == NULL); ++i) {
-
+ for (i = 0; i < DSP_MAX_PCM_CHANNELS && (pcm_index == -1 || !src_scb);
+ ++i) {
/* virtual channel reserved
for capture */
if (i == CS46XX_DSP_CAPTURE_CHANNEL) continue;
@@ -1317,7 +1312,7 @@ cs46xx_dsp_create_pcm_channel (struct snd_cs46xx * chip,
return NULL;
}
- if (src_scb == NULL) {
+ if (!src_scb) {
if (ins->nsrc_scb >= DSP_MAX_SRC_NR) {
dev_err(chip->card->dev,
"dsp_spos: to many SRC instances\n!");
@@ -1784,7 +1779,7 @@ int cs46xx_iec958_post_close (struct snd_cs46xx *chip)
cs46xx_poke_via_dsp (chip,SP_SPDOUT_CSUV, ins->spdif_csuv_default);
/* deallocate stuff */
- if (ins->spdif_pcm_input_scb != NULL) {
+ if (ins->spdif_pcm_input_scb) {
cs46xx_dsp_remove_scb (chip,ins->spdif_pcm_input_scb);
ins->spdif_pcm_input_scb = NULL;
}
--
2.15.0
^ permalink raw reply [flat|nested] 6+ messages in thread