[PATCH] accel/ivpu/37xx: Fix interrupt_clear_with_0 WA initialization

[Jeffrey Hugo]

On 12/4/2023 5:23 AM, Jacek Lawrynowicz wrote:
> From: Andrzej Kacprowski <Andrzej.Kacprowski at intel.com>
> 
> Using PCI Device ID/Revision to initialize the interrupt_clear_with_0
> workaround is problematic - there are many pre-production
> steppings with different behavior, even with the same PCI ID/Revision
> 
> Instead of checking for PCI Device ID/Revision, check the VPU
> buttress interrupt status register behavior - if this register
> is not zero after writing 1s it means there register is RW
> instead of RW1C and we need to enable the interrupt_clear_with_0
> workaround.
> 
> Fixes: 7f34e01f77f8 ("accel/ivpu: Clear specific interrupt status bits on C0")
> Signed-off-by: Andrzej Kacprowski <Andrzej.Kacprowski at intel.com>
> Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz at linux.intel.com>

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