ASoC: Updates for v3.13

Some additional fixes for v3.13, the majority of which are removals and
 downgrades of BUG()s from Takashi.
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Merge tag 'asoc-v3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v3.13

Some additional fixes for v3.13, the majority of which are removals and
downgrades of BUG()s from Takashi.
This commit is contained in:
Takashi Iwai 2013-11-08 16:45:38 +01:00
commit a6bc732b5a
126 changed files with 1049 additions and 867 deletions

View file

@ -456,13 +456,15 @@ struct perf_event_mmap_page {
/*
* Control data for the mmap() data buffer.
*
* User-space reading the @data_head value should issue an rmb(), on
* SMP capable platforms, after reading this value -- see
* perf_event_wakeup().
* User-space reading the @data_head value should issue an smp_rmb(),
* after reading this value.
*
* When the mapping is PROT_WRITE the @data_tail value should be
* written by userspace to reflect the last read data. In this case
* the kernel will not over-write unread data.
* written by userspace to reflect the last read data, after issueing
* an smp_mb() to separate the data read from the ->data_tail store.
* In this case the kernel will not over-write unread data.
*
* See perf_output_put_handle() for the data ordering.
*/
__u64 data_head; /* head in the data section */
__u64 data_tail; /* user-space written tail */