ASoC: msm: Add async ops for codec TX path

 * Improves low-latency capture performance

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
ASoC: msm: qdsp6v2: add check for NULL dereference

The asm loopback driver during close does not check
for NULL before closing the playback and capture
instances.

The change ensures only the valid playback/capture
instances are closed.

Signed-off-by: Aravind Kumar <akumark@codeaurora.org>
Signed-off-by: Pradosh Das <c_prados@qti.qualcomm.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
SoC: msm: Add Buffer overflow check

The overflow check is required to ensure that user space data
in kernel may not go beyond buffer boundary.

Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>
Signed-off-by: Mohammad Johny Shaik <mjshai@codeaurora.org>
Signed-off-by: Pavan Chikkala <pavanc@codeaurora.org>
Signed-off-by: Divya Narayanan Poojary <dnaray@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slim_ngd: Use DSP before-shutdown notification for DSP SSR

QMI_SERVER_EXIT notification comes too late (after the DSP has
shutdown). This can result in unclocked access by BAM if there was
in-flight transaction. Use BEFORE_SHUTDOWN notification of SSR
framework instead to make sure in-flight transaction is finished
before DSP turns off its resources.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Dilip Kota <c_dkota@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slim_ngd: Ensure device state consistency with runtime-pm during SSR

During ADSP SSR, client's thread calling runtime-pm resume will
fail since ADSP is unreachable. Make sure such power-up/resume attempt
is blocked until ADSP comes up by using mutex during device-state
transition.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>