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ASoC: core: Add compat ioctl support for listen driver

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Change adds compat ioctl to listen driver for supporting 32 bit userspace
client when kernel is compiled for 64 bit.

Change-Id: Ie6a6fb1f2b6ea569e03b02bc520ef79b95c1009c
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Meng Wang <mwang@codeaurora.org>
This commit is contained in:
Banajit Goswami 2014-08-21 18:49:04 -07:00 • committed by Gerrit - the friendly Code Review server
parent a3bbd35522
commit beb98e57f2
1 changed files with 16 additions and 0 deletions

16
sound/core/pcm_compat.c
View file

@ -667,6 +667,20 @@ static int snd_compressed_ioctl32(struct snd_pcm_substream *substream,
pr_debug("%s called with cmd = %d\n", __func__, cmd);
return err;
}
static int snd_user_ioctl32(struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
struct snd_pcm_runtime *runtime;
int err = -ENOIOCTLCMD;
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
runtime = substream->runtime;
if (substream->ops->compat_ioctl)
err = substream->ops->compat_ioctl(substream, cmd, arg);
return err;
}
static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
{
@ -748,6 +762,8 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l
default:
if (_IOC_TYPE(cmd) == 'C')
return snd_compressed_ioctl32(substream, cmd, argp);
else if (_IOC_TYPE(cmd) == 'U')
return snd_user_ioctl32(substream, cmd, argp);
}
return -ENOIOCTLCMD;