[PATCH 2/7] accel/ivpu: Correct MMU queue size checking functions
Jeffrey Hugo
quic_jhugo at quicinc.com
Fri Jan 26 18:19:19 UTC 2024
On 1/26/2024 5:27 AM, Jacek Lawrynowicz wrote:
> From: "Wachowski, Karol" <karol.wachowski at intel.com>
>
> Do not use kernel CIRC_SPACE and CIRC_CNT that
> incorrectly return space of a queue when wrap bit was set.
> Use correct implementation that compares producer, consumer and
> wrap bit values.
>
> Without this fix it was possible to lose events in case when event
> queue was full.
>
> Signed-off-by: Wachowski, Karol <karol.wachowski at intel.com>
> Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz at linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo at quicinc.com>
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