Commit d78867a9 authored Jun 01, 2017 by Antoine Tenart Committed by Herbert Xu Jun 19, 2017

crypto: sun4i-ss - use GENMASK to generate masks



Use the GENMASK helper instead of custom calculations to generate masks,
It also helps the readability.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent 303391d6

drivers/crypto/sunxi-ss/sun4i-ss-hash.c

+6 −3

Original line number	Diff line number	Diff line
		@@ -384,12 +384,15 @@ static int sun4i_hash(struct ahash_request *areq)
		writesl(ss->base + SS_RXFIFO, op->buf, nwait);
		op->byte_count += 4 * nwait;
		}

		nbw = op->len - 4 * nwait;
		if (nbw) {
		wb = (u32 )(op->buf + nwait * 4);
		wb &= (0xFFFFFFFF >> (4 - nbw) * 8);
		wb &= GENMASK((nbw * 8) - 1, 0);

		op->byte_count += nbw;
		}
		}

		/* write the remaining bytes of the nbw buffer */
		wb \|= ((1 << 7) << (nbw * 8));