crypto: caam/qi2 - relax busy polling while enqueuing FDs

Add cpu_relax() in the loop that tries to enqueue the FDs.

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/caam/caamalg_qi2.c b/drivers/crypto/caam/caamalg_qi2.c
index 6a6a508f5fd201be7c2f5f45ac334fc29e8498a1..c2c1abc68f81ef241351ab696a5d6c95e03906f6 100644 (file)
--- a/drivers/crypto/caam/caamalg_qi2.c
+++ b/drivers/crypto/caam/caamalg_qi2.c
@@ -5277,6 +5277,8 @@ int dpaa2_caam_enqueue(struct device *dev, struct caam_request *req)
                                                  &fd);
                if (err != -EBUSY)
                        break;
+
+               cpu_relax();
        }
 
        if (unlikely(err)) {