Hi,
In ALSA fireworks driver and firewire-tascam driver, current implementation for hwdep interface have issues for page fault handling. For example, when using single core processor, after executing lock_page() in page fault handler and call task scheduler, then the context never run again, because any interrupts are disabled by these drivers and the context can't catch waiting event. This patchset fixes the issues.
The issues were reported by Vaishali Thakkar, with a help of coccinelle. Thanks a lot for his care to these minor drivers. http://mailman.alsa-project.org/pipermail/alsa-devel/2016-August/111887.html
Takashi Sakamoto (2): ALSA: fireworks: accessing to user space outside spinlock ALSA: firewire-tascam: accessing to user space outside spinlock
sound/firewire/fireworks/fireworks_hwdep.c | 20 ++++++++++++++----- sound/firewire/tascam/tascam-hwdep.c | 32 ++++++++++-------------------- 2 files changed, 25 insertions(+), 27 deletions(-)