[PATCH 3.2 45/62] ALSA: timer: Fix broken compat timer user status ioctl

From: Ben Hutchings
Date: Tue Mar 29 2016 - 16:20:09 EST


3.2.79-rc1 review patch. If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@xxxxxxx>

commit 3a72494ac2a3bd229db941d51e7efe2f6ccd947b upstream.

The timer user status compat ioctl returned the bogus struct used for
64bit architectures instead of the 32bit one. This patch addresses
it to return the proper struct.

Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
sound/core/timer_compat.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

--- a/sound/core/timer_compat.c
+++ b/sound/core/timer_compat.c
@@ -70,13 +70,14 @@ static int snd_timer_user_status_compat(
struct snd_timer_status32 __user *_status)
{
struct snd_timer_user *tu;
- struct snd_timer_status status;
+ struct snd_timer_status32 status;

tu = file->private_data;
if (snd_BUG_ON(!tu->timeri))
return -ENXIO;
memset(&status, 0, sizeof(status));
- status.tstamp = tu->tstamp;
+ status.tstamp.tv_sec = tu->tstamp.tv_sec;
+ status.tstamp.tv_nsec = tu->tstamp.tv_nsec;
status.resolution = snd_timer_resolution(tu->timeri);
status.lost = tu->timeri->lost;
status.overrun = tu->overrun;