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In caam_jr_enqueue, under heavy DDR load, smp_wmb() or dma_wmb()
fail to make the input ring be updated before the CAAM starts
reading it. So, CAAM will process, again, an old descriptor address
and will put it in the output ring. This will make caam_jr_dequeue()
to fail, since this old descriptor is not in the software ring.
To fix this, use wmb() which works on the full system instead of
inner/outer shareable domains.
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Gaurav Jain <gaurav.jain@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
e47e6d2aaa