[PATCH 8/8] accel/ivpu: Fix deadlock in context_xa

[Jeffrey Hugo]

On 4/2/2024 4:49 AM, Jacek Lawrynowicz wrote:
> ivpu_device->context_xa is locked both in kernel thread and IRQ context.
> It requires XA_FLAGS_LOCK_IRQ flag to be passed during initialization
> otherwise the lock could be acquired from a thread and interrupted by
> an IRQ that locks it for the second time causing the deadlock.
> 
> This deadlock was reported by lockdep and observed in internal tests.
> 
> Fixes: 35b137630f08 ("accel/ivpu: Introduce a new DRM driver for Intel VPU")
> Cc: <stable at vger.kernel.org> # v6.3+
> Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz at linux.intel.com>

Reviewed-by: Jeffrey Hugo <quic_jhugo at quicinc.com>