snd_pcm_ops are not supposed to change at runtime. All functions working with snd_pcm_ops provided by <sound/pcm.h> work with const snd_pcm_ops. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav arvind.yadav.cs@gmail.com --- sound/pci/echoaudio/echoaudio.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c index d15ecf9..7326695 100644 --- a/sound/pci/echoaudio/echoaudio.c +++ b/sound/pci/echoaudio/echoaudio.c @@ -826,7 +826,7 @@ static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream)
/* pcm *_ops structures */ -static struct snd_pcm_ops analog_playback_ops = { +static const struct snd_pcm_ops analog_playback_ops = { .open = pcm_analog_out_open, .close = pcm_close, .ioctl = snd_pcm_lib_ioctl, @@ -837,7 +837,7 @@ static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream) .pointer = pcm_pointer, .page = snd_pcm_sgbuf_ops_page, }; -static struct snd_pcm_ops analog_capture_ops = { +static const struct snd_pcm_ops analog_capture_ops = { .open = pcm_analog_in_open, .close = pcm_close, .ioctl = snd_pcm_lib_ioctl, @@ -850,7 +850,7 @@ static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream) }; #ifdef ECHOCARD_HAS_DIGITAL_IO #ifndef ECHOCARD_HAS_VMIXER -static struct snd_pcm_ops digital_playback_ops = { +static const struct snd_pcm_ops digital_playback_ops = { .open = pcm_digital_out_open, .close = pcm_close, .ioctl = snd_pcm_lib_ioctl, @@ -862,7 +862,7 @@ static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream) .page = snd_pcm_sgbuf_ops_page, }; #endif /* !ECHOCARD_HAS_VMIXER */ -static struct snd_pcm_ops digital_capture_ops = { +static const struct snd_pcm_ops digital_capture_ops = { .open = pcm_digital_in_open, .close = pcm_close, .ioctl = snd_pcm_lib_ioctl,