From 7e68406ce2da7bf14dc2468cf2095860d9944990 Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Wed, 16 Nov 2011 18:28:01 +0100 Subject: [PATCH] crypto: mv_cesa - fix hashing of chunks > 1920 bytes This was broken by commit 2c3c9903d8da64ee3da1ead975f23ba3d9604dc5 (yes, myself). The basic problem here is since the digest state is only saved after the last chunk, the state array is only valid when handling the first chunk of the next buffer. Broken since linux-3.0. Signed-off-by: Phil Sutter Cc: # 3.1.x Signed-off-by: Herbert Xu --- drivers/crypto/mv_cesa.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c index 3cf303ee3fe34..38a3297ae2bef 100644 --- a/drivers/crypto/mv_cesa.c +++ b/drivers/crypto/mv_cesa.c @@ -342,11 +342,13 @@ static void mv_process_hash_current(int first_block) else op.config |= CFG_MID_FRAG; - writel(req_ctx->state[0], cpg->reg + DIGEST_INITIAL_VAL_A); - writel(req_ctx->state[1], cpg->reg + DIGEST_INITIAL_VAL_B); - writel(req_ctx->state[2], cpg->reg + DIGEST_INITIAL_VAL_C); - writel(req_ctx->state[3], cpg->reg + DIGEST_INITIAL_VAL_D); - writel(req_ctx->state[4], cpg->reg + DIGEST_INITIAL_VAL_E); + if (first_block) { + writel(req_ctx->state[0], cpg->reg + DIGEST_INITIAL_VAL_A); + writel(req_ctx->state[1], cpg->reg + DIGEST_INITIAL_VAL_B); + writel(req_ctx->state[2], cpg->reg + DIGEST_INITIAL_VAL_C); + writel(req_ctx->state[3], cpg->reg + DIGEST_INITIAL_VAL_D); + writel(req_ctx->state[4], cpg->reg + DIGEST_INITIAL_VAL_E); + } } memcpy(cpg->sram + SRAM_CONFIG, &op, sizeof(struct sec_accel_config)); -- 2.39.5