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[ALSA] oxygen: use uintptr_t in pointer casts 

When we store the DMA channel number in the substream's private_data
pointer, use uintptr_t as an intermediate step when casting from/to
unsigned int to prevent the compiler from whining when the pointer size
is different.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Clemens Ladisch 2008-01-04 09:22:20 +01:00 committed by Jaroslav Kysela
parent 93521d274b
commit 740eb8358f
1 changed files with 13 additions and 7 deletions
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20
sound/pci/oxygen/oxygen_pcm.c
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@ -168,6 +168,12 @@ static struct snd_pcm_hardware oxygen_hardware[PCM_COUNT] = {
}, },
}; };
static inline unsigned int
oxygen_substream_channel(struct snd_pcm_substream *substream)
{
return (unsigned int)(uintptr_t)substream->runtime->private_data;
}
static int oxygen_open(struct snd_pcm_substream *substream, static int oxygen_open(struct snd_pcm_substream *substream,
unsigned int channel) unsigned int channel)
{ {
@ -175,7 +181,7 @@ static int oxygen_open(struct snd_pcm_substream *substream,
struct snd_pcm_runtime *runtime = substream->runtime; struct snd_pcm_runtime *runtime = substream->runtime;
int err; int err;
runtime->private_data = (void *)channel; runtime->private_data = (void *)(uintptr_t)channel;
runtime->hw = oxygen_hardware[channel]; runtime->hw = oxygen_hardware[channel];
err = snd_pcm_hw_constraint_step(runtime, 0, err = snd_pcm_hw_constraint_step(runtime, 0,
SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32); SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
@ -248,7 +254,7 @@ static int oxygen_ac97_open(struct snd_pcm_substream *substream)
static int oxygen_close(struct snd_pcm_substream *substream) static int oxygen_close(struct snd_pcm_substream *substream)
{ {
struct oxygen *chip = snd_pcm_substream_chip(substream); struct oxygen *chip = snd_pcm_substream_chip(substream);
unsigned int channel = (unsigned int)substream->runtime->private_data; unsigned int channel = oxygen_substream_channel(substream);
mutex_lock(&chip->mutex); mutex_lock(&chip->mutex);
chip->pcm_active &= ~(1 << channel); chip->pcm_active &= ~(1 << channel);
@ -337,7 +343,7 @@ static int oxygen_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params) struct snd_pcm_hw_params *hw_params)
{ {
struct oxygen *chip = snd_pcm_substream_chip(substream); struct oxygen *chip = snd_pcm_substream_chip(substream);
unsigned int channel = (unsigned int)substream->runtime->private_data; unsigned int channel = oxygen_substream_channel(substream);
int err; int err;
err = snd_pcm_lib_malloc_pages(substream, err = snd_pcm_lib_malloc_pages(substream,
@ -516,7 +522,7 @@ static int oxygen_ac97_hw_params(struct snd_pcm_substream *substream,
static int oxygen_hw_free(struct snd_pcm_substream *substream) static int oxygen_hw_free(struct snd_pcm_substream *substream)
{ {
struct oxygen *chip = snd_pcm_substream_chip(substream); struct oxygen *chip = snd_pcm_substream_chip(substream);
unsigned int channel = (unsigned int)substream->runtime->private_data; unsigned int channel = oxygen_substream_channel(substream);
spin_lock_irq(&chip->reg_lock); spin_lock_irq(&chip->reg_lock);
chip->interrupt_mask &= ~(1 << channel); chip->interrupt_mask &= ~(1 << channel);
@ -540,7 +546,7 @@ static int oxygen_spdif_hw_free(struct snd_pcm_substream *substream)
static int oxygen_prepare(struct snd_pcm_substream *substream) static int oxygen_prepare(struct snd_pcm_substream *substream)
{ {
struct oxygen *chip = snd_pcm_substream_chip(substream); struct oxygen *chip = snd_pcm_substream_chip(substream);
unsigned int channel = (unsigned int)substream->runtime->private_data; unsigned int channel = oxygen_substream_channel(substream);
unsigned int channel_mask = 1 << channel; unsigned int channel_mask = 1 << channel;
spin_lock_irq(&chip->reg_lock); spin_lock_irq(&chip->reg_lock);
@ -575,7 +581,7 @@ static int oxygen_trigger(struct snd_pcm_substream *substream, int cmd)
snd_pcm_group_for_each_entry(s, substream) { snd_pcm_group_for_each_entry(s, substream) {
if (snd_pcm_substream_chip(s) == chip) { if (snd_pcm_substream_chip(s) == chip) {
mask |= 1 << (unsigned int)s->runtime->private_data; mask |= 1 << oxygen_substream_channel(s);
snd_pcm_trigger_done(s, substream); snd_pcm_trigger_done(s, substream);
} }
} }
@ -594,7 +600,7 @@ static snd_pcm_uframes_t oxygen_pointer(struct snd_pcm_substream *substream)
{ {
struct oxygen *chip = snd_pcm_substream_chip(substream); struct oxygen *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime; struct snd_pcm_runtime *runtime = substream->runtime;
unsigned int channel = (unsigned int)runtime->private_data; unsigned int channel = oxygen_substream_channel(substream);
u32 curr_addr; u32 curr_addr;
/* no spinlock, this read should be atomic */ /* no spinlock, this read should be atomic */