Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2c5bd1ef authored by Tero Kristo's avatar Tero Kristo Committed by Herbert Xu
Browse files

crypto: omap-sham - change the DMA threshold value to a define 



Currently the threshold value was hardcoded in the driver. Having a define
for it makes it easier to configure.

Signed-off-by: default avatarTero Kristo <t-kristo@ti.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent f19de1bc

drivers/crypto/omap-sham.c

+5 −3
Original line number Diff line number Diff line
@@ -137,6 +137,7 @@ 
#define OMAP_ALIGNED		__attribute__((aligned(sizeof(u32))))



#define BUFLEN			PAGE_SIZE

#define OMAP_SHA_DMA_THRESHOLD	256



struct omap_sham_dev;
@@ -1435,10 +1436,11 @@ static int omap_sham_final(struct ahash_request *req) 
	/*

	 * OMAP HW accel works only with buffers >= 9.

	 * HMAC is always >= 9 because ipad == block size.

	 * If buffersize is less than 240, we use fallback SW encoding,

	 * as using DMA + HW in this case doesn't provide any benefit.

	 * If buffersize is less than DMA_THRESHOLD, we use fallback

	 * SW encoding, as using DMA + HW in this case doesn't provide

	 * any benefit.

	 */

	if (!ctx->digcnt && ctx->bufcnt < 240)

	if (!ctx->digcnt && ctx->bufcnt < OMAP_SHA_DMA_THRESHOLD)

		return omap_sham_final_shash(req);

	else if (ctx->bufcnt)

		return omap_sham_enqueue(req, OP_FINAL);