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authorJonathan Corbet <corbet@lwn.net>2009-02-01 14:52:56 -0700
committerJonathan Corbet <corbet@lwn.net>2009-03-16 08:34:35 -0600
commit60aa49243d09afc873f082567d2e3c16634ced84 (patch)
treebb7c8d9668b35a3aa4e90d0a62500ac9d3e67f7f /sound
parent76398425bb06b07cc3a3b1ce169c67dc9d6874ed (diff)
downloadlinux-2.6.34-ux500-60aa49243d09afc873f082567d2e3c16634ced84.tar.gz
Rationalize fasync return values
Most fasync implementations do something like: return fasync_helper(...); But fasync_helper() will return a positive value at times - a feature used in at least one place. Thus, a number of other drivers do: err = fasync_helper(...); if (err < 0) return err; return 0; In the interests of consistency and more concise code, it makes sense to map positive return values onto zero where ->fasync() is called. Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'sound')
-rw-r--r--sound/core/control.c7
-rw-r--r--sound/core/pcm_native.c4
-rw-r--r--sound/core/timer.c6
3 files changed, 4 insertions, 13 deletions
diff --git a/sound/core/control.c b/sound/core/control.c
index 636b3b52ef8..4b20fa2b7e6 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -1373,12 +1373,9 @@ EXPORT_SYMBOL(snd_ctl_unregister_ioctl_compat);
static int snd_ctl_fasync(int fd, struct file * file, int on)
{
struct snd_ctl_file *ctl;
- int err;
+
ctl = file->private_data;
- err = fasync_helper(fd, file, on, &ctl->fasync);
- if (err < 0)
- return err;
- return 0;
+ return fasync_helper(fd, file, on, &ctl->fasync);
}
/*
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index a789efc9df3..a75c194e629 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -3246,9 +3246,7 @@ static int snd_pcm_fasync(int fd, struct file * file, int on)
err = fasync_helper(fd, file, on, &runtime->fasync);
out:
unlock_kernel();
- if (err < 0)
- return err;
- return 0;
+ return err;
}
/*
diff --git a/sound/core/timer.c b/sound/core/timer.c
index 796532081e8..3f0050d0b71 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -1825,13 +1825,9 @@ static long snd_timer_user_ioctl(struct file *file, unsigned int cmd,
static int snd_timer_user_fasync(int fd, struct file * file, int on)
{
struct snd_timer_user *tu;
- int err;
tu = file->private_data;
- err = fasync_helper(fd, file, on, &tu->fasync);
- if (err < 0)
- return err;
- return 0;
+ return fasync_helper(fd, file, on, &tu->fasync);
}
static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,