msm_serial_hs: Handle client requests without port open

Adding defensive checks in the APIs to handle the
client driver requests calling without port open.

Change-Id: I0d618abbc7a38151651550a07aa909689ce92054
Signed-off-by: Dilip Kota <c_dkota@codeaurora.org>
msm: vidc: Enable clocks before iommu attach

Change the fw load sequence to match the opposite of
unload sequence. This makes sure all clocks are on before calling
iommu attach.

Change-Id: I1113357c37158da5889f26da8fd4a74d0d170c07
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>
kernel: cgroup: protect cgroup linked lists

Protecting cgroup lists to fix corruption due to race since
freeing of css_set now in new worker thread, free_css_set_work()

CRs-fixed: 715355
Change-Id: Iec4d7be0c372a17487f96bcdc1542afaff79dd1b
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>