Skip to content

L
linux
Commit 5851bd06 authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds
Browse files
Options

[PATCH] sparse: sound/core/pcm* annotation 

The tricky part here was an iterator that used to take a callback and
argument for that callback as parameters.  Iterator itself didn't care
what type that argument had been; it's entirely up to callback.  The
thing is, two callbacks expect (and get) char __user * while other two
expect (and also get) char __user **.

Iterator used to use void * as "opaque data"; I've switched it to
unsigned long.  Note that there was nothing that said "it's a pointer" -
use of callback that would take e.g.  int is also perfectly legitimate. 

The rest is triviali annotation.
parent 52e441e4
Expand all Hide whitespace changes
Inline Side-by-side
Showing with 89 additions and 73 deletions
sound/core/pcm_lib.c
View file @ 5851bd06
......@@ -2049,12 +2049,12 @@ void snd_pcm_period_elapsed(snd_pcm_substream_t *substream)
static int snd_pcm_lib_write_transfer(snd_pcm_substream_t *substream,
unsigned int hwoff,
void *data, unsigned int off,
unsigned long data, unsigned int off,
snd_pcm_uframes_t frames)
{
snd_pcm_runtime_t *runtime = substream->runtime;
int err;
char *buf = (char *) data + frames_to_bytes(runtime, off);
char __user *buf = (char __user *) data + frames_to_bytes(runtime, off);
if (substream->ops->copy) {
if ((err = substream->ops->copy(substream, -1, hwoff, buf, frames)) < 0)
return err;
......@@ -2068,10 +2068,12 @@ static int snd_pcm_lib_write_transfer(snd_pcm_substream_t *substream,
}
typedef int (*transfer_f)(snd_pcm_substream_t *substream, unsigned int hwoff,
void *data, unsigned int off, snd_pcm_uframes_t size);
unsigned long data, unsigned int off,
snd_pcm_uframes_t size);
static snd_pcm_sframes_t snd_pcm_lib_write1(snd_pcm_substream_t *substream,
const void *data, snd_pcm_uframes_t size,
unsigned long data,
snd_pcm_uframes_t size,
int nonblock,
transfer_f transfer)
{
......@@ -2186,7 +2188,7 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(snd_pcm_substream_t *substream,
appl_ptr = runtime->control->appl_ptr;
appl_ofs = appl_ptr % runtime->buffer_size;
snd_pcm_stream_unlock_irq(substream);
if ((err = transfer(substream, appl_ofs, (void *)data, offset, frames)) < 0)
if ((err = transfer(substream, appl_ofs, data, offset, frames)) < 0)
goto _end;
snd_pcm_stream_lock_irq(substream);
switch (runtime->status->state) {
......@@ -2227,7 +2229,7 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(snd_pcm_substream_t *substream,
return xfer > 0 ? (snd_pcm_sframes_t)xfer : err;
}
snd_pcm_sframes_t snd_pcm_lib_write(snd_pcm_substream_t *substream, const void *buf, snd_pcm_uframes_t size)
snd_pcm_sframes_t snd_pcm_lib_write(snd_pcm_substream_t *substream, const void __user *buf, snd_pcm_uframes_t size)
{
snd_pcm_runtime_t *runtime;
int nonblock;
......@@ -2256,18 +2258,18 @@ snd_pcm_sframes_t snd_pcm_lib_write(snd_pcm_substream_t *substream, const void *
if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED &&
runtime->channels > 1)
return -EINVAL;
return snd_pcm_lib_write1(substream, buf, size, nonblock,
return snd_pcm_lib_write1(substream, (unsigned long)buf, size, nonblock,
snd_pcm_lib_write_transfer);
}
static int snd_pcm_lib_writev_transfer(snd_pcm_substream_t *substream,
unsigned int hwoff,
void *data, unsigned int off,
unsigned long data, unsigned int off,
snd_pcm_uframes_t frames)
{
snd_pcm_runtime_t *runtime = substream->runtime;
int err;
void **bufs = data;
void __user **bufs = (void __user **)data;
int channels = runtime->channels;
int c;
if (substream->ops->copy) {
......@@ -2277,7 +2279,7 @@ static int snd_pcm_lib_writev_transfer(snd_pcm_substream_t *substream,
if ((err = substream->ops->silence(substream, c, hwoff, frames)) < 0)
return err;
} else {
char *buf = *bufs + samples_to_bytes(runtime, off);
char __user *buf = *bufs + samples_to_bytes(runtime, off);
if ((err = substream->ops->copy(substream, c, hwoff, buf, frames)) < 0)
return err;
}
......@@ -2291,7 +2293,7 @@ static int snd_pcm_lib_writev_transfer(snd_pcm_substream_t *substream,
if (*bufs == NULL) {
snd_pcm_format_set_silence(runtime->format, hwbuf, frames);
} else {
char *buf = *bufs + samples_to_bytes(runtime, off);
char __user *buf = *bufs + samples_to_bytes(runtime, off);
if (copy_from_user(hwbuf, buf, samples_to_bytes(runtime, frames)))
return -EFAULT;
}
......@@ -2300,7 +2302,8 @@ static int snd_pcm_lib_writev_transfer(snd_pcm_substream_t *substream,
return 0;
}
snd_pcm_sframes_t snd_pcm_lib_writev(snd_pcm_substream_t *substream, void **bufs,
snd_pcm_sframes_t snd_pcm_lib_writev(snd_pcm_substream_t *substream,
void __user **bufs,
snd_pcm_uframes_t frames)
{
snd_pcm_runtime_t *runtime;
......@@ -2329,18 +2332,18 @@ snd_pcm_sframes_t snd_pcm_lib_writev(snd_pcm_substream_t *substream, void **bufs
if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
return -EINVAL;
return snd_pcm_lib_write1(substream, bufs, frames, nonblock,
snd_pcm_lib_writev_transfer);
return snd_pcm_lib_write1(substream, (unsigned long)bufs, frames,
nonblock, snd_pcm_lib_writev_transfer);
}
static int snd_pcm_lib_read_transfer(snd_pcm_substream_t *substream,
unsigned int hwoff,
void *data, unsigned int off,
unsigned long data, unsigned int off,
snd_pcm_uframes_t frames)
{
snd_pcm_runtime_t *runtime = substream->runtime;
int err;
char *buf = (char *) data + frames_to_bytes(runtime, off);
char __user *buf = (char __user *) data + frames_to_bytes(runtime, off);
if (substream->ops->copy) {
if ((err = substream->ops->copy(substream, -1, hwoff, buf, frames)) < 0)
return err;
......@@ -2353,7 +2356,10 @@ static int snd_pcm_lib_read_transfer(snd_pcm_substream_t *substream,
return 0;
}
static snd_pcm_sframes_t snd_pcm_lib_read1(snd_pcm_substream_t *substream, void *data, snd_pcm_uframes_t size, int nonblock,
static snd_pcm_sframes_t snd_pcm_lib_read1(snd_pcm_substream_t *substream,
unsigned long data,
snd_pcm_uframes_t size,
int nonblock,
transfer_f transfer)
{
snd_pcm_runtime_t *runtime = substream->runtime;
......@@ -2481,7 +2487,7 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(snd_pcm_substream_t *substream, void
appl_ptr = runtime->control->appl_ptr;
appl_ofs = appl_ptr % runtime->buffer_size;
snd_pcm_stream_unlock_irq(substream);
if ((err = transfer(substream, appl_ofs, (void *)data, offset, frames)) < 0)
if ((err = transfer(substream, appl_ofs, data, offset, frames)) < 0)
goto _end;
snd_pcm_stream_lock_irq(substream);
switch (runtime->status->state) {
......@@ -2516,7 +2522,7 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(snd_pcm_substream_t *substream, void
return xfer > 0 ? (snd_pcm_sframes_t)xfer : err;
}
snd_pcm_sframes_t snd_pcm_lib_read(snd_pcm_substream_t *substream, void *buf, snd_pcm_uframes_t size)
snd_pcm_sframes_t snd_pcm_lib_read(snd_pcm_substream_t *substream, void __user *buf, snd_pcm_uframes_t size)
{
snd_pcm_runtime_t *runtime;
int nonblock;
......@@ -2543,22 +2549,22 @@ snd_pcm_sframes_t snd_pcm_lib_read(snd_pcm_substream_t *substream, void *buf, sn
#endif
if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED)
return -EINVAL;
return snd_pcm_lib_read1(substream, buf, size, nonblock, snd_pcm_lib_read_transfer);
return snd_pcm_lib_read1(substream, (unsigned long)buf, size, nonblock, snd_pcm_lib_read_transfer);
}
static int snd_pcm_lib_readv_transfer(snd_pcm_substream_t *substream,
unsigned int hwoff,
void *data, unsigned int off,
unsigned long data, unsigned int off,
snd_pcm_uframes_t frames)
{
snd_pcm_runtime_t *runtime = substream->runtime;
int err;
void **bufs = data;
void __user **bufs = (void __user **)data;
int channels = runtime->channels;
int c;
if (substream->ops->copy) {
for (c = 0; c < channels; ++c, ++bufs) {
char *buf;
char __user *buf;
if (*bufs == NULL)
continue;
buf = *bufs + samples_to_bytes(runtime, off);
......@@ -2569,7 +2575,8 @@ static int snd_pcm_lib_readv_transfer(snd_pcm_substream_t *substream,
snd_pcm_uframes_t dma_csize = runtime->dma_bytes / channels;
snd_assert(runtime->dma_area, return -EFAULT);
for (c = 0; c < channels; ++c, ++bufs) {
char *hwbuf, *buf;
char *hwbuf;
char __user *buf;
if (*bufs == NULL)
continue;
......@@ -2582,7 +2589,8 @@ static int snd_pcm_lib_readv_transfer(snd_pcm_substream_t *substream,
return 0;
}
snd_pcm_sframes_t snd_pcm_lib_readv(snd_pcm_substream_t *substream, void **bufs,
snd_pcm_sframes_t snd_pcm_lib_readv(snd_pcm_substream_t *substream,
void __user **bufs,
snd_pcm_uframes_t frames)
{
snd_pcm_runtime_t *runtime;
......@@ -2611,7 +2619,7 @@ snd_pcm_sframes_t snd_pcm_lib_readv(snd_pcm_substream_t *substream, void **bufs,
if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
return -EINVAL;
return snd_pcm_lib_read1(substream, bufs, frames, nonblock, snd_pcm_lib_readv_transfer);
return snd_pcm_lib_read1(substream, (unsigned long)bufs, frames, nonblock, snd_pcm_lib_readv_transfer);
}
/*
......
sound/core/pcm_native.c
View file @ 5851bd06
This diff is collapsed.
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7