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path: root/drivers/media/v4l2-core/v4l2-ioctl.c
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Diffstat (limited to 'drivers/media/v4l2-core/v4l2-ioctl.c')
-rw-r--r--drivers/media/v4l2-core/v4l2-ioctl.c38
1 files changed, 20 insertions, 18 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 2673f51aafa4..05d5db3d85e5 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -3072,8 +3072,8 @@ static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
static unsigned int video_translate_cmd(unsigned int cmd)
{
+#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
switch (cmd) {
-#ifdef CONFIG_COMPAT_32BIT_TIME
case VIDIOC_DQEVENT_TIME32:
return VIDIOC_DQEVENT;
case VIDIOC_QUERYBUF_TIME32:
@@ -3084,8 +3084,8 @@ static unsigned int video_translate_cmd(unsigned int cmd)
return VIDIOC_DQBUF;
case VIDIOC_PREPARE_BUF_TIME32:
return VIDIOC_PREPARE_BUF;
-#endif
}
+#endif
if (in_compat_syscall())
return v4l2_compat_translate_cmd(cmd);
@@ -3124,10 +3124,12 @@ static int video_get_user(void __user *arg, void *parg,
if (copy_from_user(parg, (void __user *)arg, n))
err = -EFAULT;
} else if (in_compat_syscall()) {
+ memset(parg, 0, n);
err = v4l2_compat_get_user(arg, parg, cmd);
} else {
+ memset(parg, 0, n);
+#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
switch (cmd) {
-#ifdef CONFIG_COMPAT_32BIT_TIME
case VIDIOC_QUERYBUF_TIME32:
case VIDIOC_QBUF_TIME32:
case VIDIOC_DQBUF_TIME32:
@@ -3140,23 +3142,23 @@ static int video_get_user(void __user *arg, void *parg,
*vb = (struct v4l2_buffer) {
.index = vb32.index,
- .type = vb32.type,
- .bytesused = vb32.bytesused,
- .flags = vb32.flags,
- .field = vb32.field,
- .timestamp.tv_sec = vb32.timestamp.tv_sec,
- .timestamp.tv_usec = vb32.timestamp.tv_usec,
- .timecode = vb32.timecode,
- .sequence = vb32.sequence,
- .memory = vb32.memory,
- .m.userptr = vb32.m.userptr,
- .length = vb32.length,
- .request_fd = vb32.request_fd,
+ .type = vb32.type,
+ .bytesused = vb32.bytesused,
+ .flags = vb32.flags,
+ .field = vb32.field,
+ .timestamp.tv_sec = vb32.timestamp.tv_sec,
+ .timestamp.tv_usec = vb32.timestamp.tv_usec,
+ .timecode = vb32.timecode,
+ .sequence = vb32.sequence,
+ .memory = vb32.memory,
+ .m.userptr = vb32.m.userptr,
+ .length = vb32.length,
+ .request_fd = vb32.request_fd,
};
break;
}
-#endif
}
+#endif
}
/* zero out anything we don't copy from userspace */
@@ -3181,8 +3183,8 @@ static int video_put_user(void __user *arg, void *parg,
if (in_compat_syscall())
return v4l2_compat_put_user(arg, parg, cmd);
+#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
switch (cmd) {
-#ifdef CONFIG_COMPAT_32BIT_TIME
case VIDIOC_DQEVENT_TIME32: {
struct v4l2_event *ev = parg;
struct v4l2_event_time32 ev32;
@@ -3230,8 +3232,8 @@ static int video_put_user(void __user *arg, void *parg,
return -EFAULT;
break;
}
-#endif
}
+#endif
return 0;
}