[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>
diff --git a/sound/pci/oxygen/oxygen_pcm.c b/sound/pci/oxygen/oxygen_pcm.c
index 941399b..ff46ba5 100644
--- a/sound/pci/oxygen/oxygen_pcm.c
+++ b/sound/pci/oxygen/oxygen_pcm.c
@@ -168,6 +168,12 @@
},
};
+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,
unsigned int channel)
{
@@ -175,7 +181,7 @@
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
- runtime->private_data = (void *)channel;
+ runtime->private_data = (void *)(uintptr_t)channel;
runtime->hw = oxygen_hardware[channel];
err = snd_pcm_hw_constraint_step(runtime, 0,
SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
@@ -248,7 +254,7 @@
static int oxygen_close(struct snd_pcm_substream *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);
chip->pcm_active &= ~(1 << channel);
@@ -337,7 +343,7 @@
struct snd_pcm_hw_params *hw_params)
{
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;
err = snd_pcm_lib_malloc_pages(substream,
@@ -516,7 +522,7 @@
static int oxygen_hw_free(struct snd_pcm_substream *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);
chip->interrupt_mask &= ~(1 << channel);
@@ -540,7 +546,7 @@
static int oxygen_prepare(struct snd_pcm_substream *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;
spin_lock_irq(&chip->reg_lock);
@@ -575,7 +581,7 @@
snd_pcm_group_for_each_entry(s, substream) {
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);
}
}
@@ -594,7 +600,7 @@
{
struct oxygen *chip = snd_pcm_substream_chip(substream);
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;
/* no spinlock, this read should be atomic */