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authorArnd Bergmann <arnd@arndb.de>2014-01-02 13:07:48 +0100
committerTakashi Iwai <tiwai@suse.de>2014-01-14 16:11:44 +0100
commit76439c2ac686c547ca2f53bfe964c100e697ff4a (patch)
tree150ef40cb55992118fc5aa52cae5ace82c3e9608 /sound/oss
parent7bd6972a921e148beea54919a00aa7b0bf046ff1 (diff)
downloadlinux-76439c2ac686c547ca2f53bfe964c100e697ff4a.tar.bz2
sound: oss: midibuf: fix sleep_on races
sleep_on is known to be racy and going away because of this. All instances of interruptible_sleep_on and interruptible_sleep_on_timeout in the midibuf driver can trivially be replaced with wait_event_interruptible and wait_event_interruptible_timeout. [fixed coding style warnings by tiwai] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/oss')
-rw-r--r--sound/oss/midibuf.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/sound/oss/midibuf.c b/sound/oss/midibuf.c
index 8cdb2cfe65c8..8f45cd999965 100644
--- a/sound/oss/midibuf.c
+++ b/sound/oss/midibuf.c
@@ -86,9 +86,8 @@ static void drain_midi_queue(int dev)
*/
if (midi_devs[dev]->buffer_status != NULL)
- while (!signal_pending(current) && midi_devs[dev]->buffer_status(dev))
- interruptible_sleep_on_timeout(&midi_sleeper[dev],
- HZ/10);
+ wait_event_interruptible_timeout(midi_sleeper[dev],
+ !midi_devs[dev]->buffer_status(dev), HZ/10);
}
static void midi_input_intr(int dev, unsigned char data)
@@ -233,8 +232,8 @@ void MIDIbuf_release(int dev, struct file *file)
* devices
*/
- while (!signal_pending(current) && DATA_AVAIL(midi_out_buf[dev]))
- interruptible_sleep_on(&midi_sleeper[dev]);
+ wait_event_interruptible(midi_sleeper[dev],
+ !DATA_AVAIL(midi_out_buf[dev]));
/*
* Sync
*/
@@ -282,8 +281,8 @@ int MIDIbuf_write(int dev, struct file *file, const char __user *buf, int count)
goto out;
}
- interruptible_sleep_on(&midi_sleeper[dev]);
- if (signal_pending(current))
+ if (wait_event_interruptible(midi_sleeper[dev],
+ SPACE_AVAIL(midi_out_buf[dev])))
{
c = -EINTR;
goto out;
@@ -325,8 +324,9 @@ int MIDIbuf_read(int dev, struct file *file, char __user *buf, int count)
c = -EAGAIN;
goto out;
}
- interruptible_sleep_on_timeout(&input_sleeper[dev],
- parms[dev].prech_timeout);
+ wait_event_interruptible_timeout(input_sleeper[dev],
+ DATA_AVAIL(midi_in_buf[dev]),
+ parms[dev].prech_timeout);
if (signal_pending(current))
c = -EINTR; /* The user is getting restless */