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Message-ID: <20060831123706.GC3923@elf.ucw.cz>
Date: Thu, 31 Aug 2006 14:37:06 +0200
From: Pavel Machek <pavel@...e.cz>
To: Andrew Morton <akpm@...l.org>,
kernel list <linux-kernel@...r.kernel.org>, perex@...e.cz,
alsa-devel@...a-project.org
Cc: tiwai@...e.de, pshou@...ltek.com.tw
Subject: sound/pci/hda/intel_hda: small cleanups
Cleanup whitespace and warn about wrong volatile usage. This code
loves to use deprecated if ((err = foo())), but I did not have enough
strength to fix all of it. Ouch also maintainers item would be handy.
Signed-off-by: Pavel Machek <pavel@...e.cz>
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 79d63c9..86064a8 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -252,6 +252,7 @@ enum {
struct azx_dev {
u32 *bdl; /* virtual address of the BDL */
dma_addr_t bdl_addr; /* physical address of the BDL */
+ /* FIXME: volatile does not provide needed locking on SMP systems */
volatile u32 *posbuf; /* position buffer pointer */
unsigned int bufsize; /* size of the play buffer in bytes */
@@ -271,8 +272,8 @@ struct azx_dev {
/* for sanity check of position buffer */
unsigned int period_intr;
- unsigned int opened: 1;
- unsigned int running: 1;
+ unsigned int opened :1;
+ unsigned int running :1;
};
/* CORB/RIRB */
@@ -330,8 +331,8 @@ struct azx {
/* flags */
int position_fix;
- unsigned int initialized: 1;
- unsigned int single_cmd: 1;
+ unsigned int initialized :1;
+ unsigned int single_cmd :1;
};
/* driver types */
@@ -642,14 +643,14 @@ static int azx_reset(struct azx *chip)
azx_writeb(chip, GCTL, azx_readb(chip, GCTL) | ICH6_GCTL_RESET);
count = 50;
- while (! azx_readb(chip, GCTL) && --count)
+ while (!azx_readb(chip, GCTL) && --count)
msleep(1);
- /* Brent Chartrand said to wait >= 540us for codecs to intialize */
+ /* Brent Chartrand said to wait >= 540us for codecs to initialize */
msleep(1);
/* check to see if controller is ready */
- if (! azx_readb(chip, GCTL)) {
+ if (!azx_readb(chip, GCTL)) {
snd_printd("azx_reset: controller not ready!\n");
return -EBUSY;
}
@@ -658,7 +659,7 @@ static int azx_reset(struct azx *chip)
azx_writel(chip, GCTL, azx_readl(chip, GCTL) | ICH6_GCTL_UREN);
/* detect codecs */
- if (! chip->codec_mask) {
+ if (!chip->codec_mask) {
chip->codec_mask = azx_readw(chip, STATESTS);
snd_printdd("codec_mask = 0x%x\n", chip->codec_mask);
}
@@ -766,7 +767,7 @@ static void azx_init_chip(struct azx *ch
azx_int_enable(chip);
/* initialize the codec command I/O */
- if (! chip->single_cmd)
+ if (!chip->single_cmd)
azx_init_cmd_io(chip);
/* program the position buffer */
@@ -794,7 +795,7 @@ static void azx_init_chip(struct azx *ch
/*
* interrupt handler
*/
-static irqreturn_t azx_interrupt(int irq, void* dev_id, struct pt_regs *regs)
+static irqreturn_t azx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
struct azx *chip = dev_id;
struct azx_dev *azx_dev;
@@ -999,8 +1000,7 @@ static struct snd_pcm_hardware azx_pcm_h
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
- SNDRV_PCM_INFO_PAUSE /*|*/
- /*SNDRV_PCM_INFO_RESUME*/),
+ SNDRV_PCM_INFO_PAUSE),
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
@@ -1322,6 +1322,8 @@ static int __devinit azx_init_stream(str
* assign the starting bdl address to each stream (device) and initialize
*/
for (i = 0; i < chip->num_streams; i++) {
+ /* FIXME: this should probably use readl or something.
+ hand-doing volatiles is wrong. */
unsigned int off = sizeof(u32) * (i * AZX_MAX_FRAG * 4);
struct azx_dev *azx_dev = &chip->azx_dev[i];
azx_dev->bdl = (u32 *)(chip->bdl.area + off);
@@ -1399,6 +1401,7 @@ static int azx_free(struct azx *chip)
azx_writel(chip, DPUBASE, 0);
/* wait a little for interrupts to finish */
+ /* FIXME: delay is not right way to wait for interrupts */
msleep(1);
}
@@ -1434,19 +1437,19 @@ static int __devinit azx_create(struct s
struct azx **rchip)
{
struct azx *chip;
- int err = 0;
+ int err;
static struct snd_device_ops ops = {
.dev_free = azx_dev_free,
};
*rchip = NULL;
- if ((err = pci_enable_device(pci)) < 0)
+ err = pci_enable_device(pci);
+ if (err < 0)
return err;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
-
- if (NULL == chip) {
+ if (!chip) {
snd_printk(KERN_ERR SFX "cannot allocate chip\n");
pci_disable_device(pci);
return -ENOMEM;
@@ -1472,13 +1475,14 @@ static int __devinit azx_create(struct s
}
#endif
- if ((err = pci_request_regions(pci, "ICH HD audio")) < 0) {
+ err = pci_request_regions(pci, "ICH HD audio");
+ if (err < 0) {
kfree(chip);
pci_disable_device(pci);
return err;
}
- chip->addr = pci_resource_start(pci,0);
+ chip->addr = pci_resource_start(pci, 0);
chip->remap_addr = ioremap_nocache(chip->addr, pci_resource_len(pci,0));
if (chip->remap_addr == NULL) {
snd_printk(KERN_ERR SFX "ioremap error\n");
@@ -1519,7 +1523,7 @@ static int __devinit azx_create(struct s
}
chip->num_streams = chip->playback_streams + chip->capture_streams;
chip->azx_dev = kcalloc(chip->num_streams, sizeof(*chip->azx_dev), GFP_KERNEL);
- if (! chip->azx_dev) {
+ if (!chip->azx_dev) {
snd_printk(KERN_ERR "cannot malloc azx_dev\n");
goto errout;
}
@@ -1550,7 +1554,7 @@ static int __devinit azx_create(struct s
chip->initialized = 1;
/* codec detection */
- if (! chip->codec_mask) {
+ if (!chip->codec_mask) {
snd_printk(KERN_ERR SFX "no codecs found!\n");
err = -ENODEV;
goto errout;
@@ -1577,16 +1581,16 @@ static int __devinit azx_probe(struct pc
{
struct snd_card *card;
struct azx *chip;
- int err = 0;
+ int err;
card = snd_card_new(index, id, THIS_MODULE, 0);
- if (NULL == card) {
+ if (!card) {
snd_printk(KERN_ERR SFX "Error creating card!\n");
return -ENOMEM;
}
- if ((err = azx_create(card, pci, pci_id->driver_data,
- &chip)) < 0) {
+ err = azx_create(card, pci, pci_id->driver_data, &chip);
+ if (err < 0) {
snd_card_free(card);
return err;
}
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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