linux-kernel - [PATCH v4 17/33] crypto: rockchip: use read_poll

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Date:   Fri,  1 Apr 2022 20:17:48 +0000
From:   Corentin Labbe <clabbe@...libre.com>
To:     heiko@...ech.de, herbert@...dor.apana.org.au, krzk+dt@...nel.org,
        robh+dt@...nel.org
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        Corentin Labbe <clabbe@...libre.com>
Subject: [PATCH v4 17/33] crypto: rockchip: use read_poll_timeout

Use read_poll_timeout instead of open coding it

Signed-off-by: Corentin Labbe <clabbe@...libre.com>
---
 drivers/crypto/rockchip/rk3288_crypto_ahash.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/rockchip/rk3288_crypto_ahash.c b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
index 137013bd4410..21c9a0327ddf 100644
--- a/drivers/crypto/rockchip/rk3288_crypto_ahash.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
@@ -10,6 +10,7 @@
  */
 #include <linux/device.h>
 #include <asm/unaligned.h>
+#include <linux/iopoll.h>
 #include "rk3288_crypto.h"
 
 /*
@@ -305,8 +306,8 @@ static int rk_hash_run(struct crypto_engine *engine, void *breq)
 		 * efficiency, and make it response quickly when dma
 		 * complete.
 		 */
-	while (!CRYPTO_READ(tctx->dev, RK_CRYPTO_HASH_STS))
-		udelay(10);
+	read_poll_timeout(readl, v, v == 0, 10, 1000, false,
+			  tctx->dev->dev + RK_CRYPTO_HASH_STS);
 
 	for (i = 0; i < crypto_ahash_digestsize(tfm) / 4; i++) {
 		v = readl(tctx->dev->reg + RK_CRYPTO_HASH_DOUT_0 + i * 4);
-- 
2.35.1