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| author | Tero Kristo <t-kristo@ti.com> | 2016-08-04 13:28:39 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-09-13 15:20:56 +0300 |
| commit | 5a793bcadbe97df7823598b429c0af052e50df1c (patch) | |
| tree | ac6f0219ae6ca838436f68ab78c0224eb57b9146 | |
| parent | 4e7813a0b2aebb210416a418595ceb91ba4e5a37 (diff) | |
| download | linux-5a793bcadbe97df7823598b429c0af052e50df1c.tar.xz | |
crypto: omap-sham - fix software fallback handling
If we have processed any data with the hardware accelerator (digcnt > 0),
we must complete the entire hash by using it. This is because the current
hash value can't be imported to the software fallback algorithm. Otherwise
we end up with wrong hash results.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/omap-sham.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index fd50005fd942..f788319f7ba7 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -1163,7 +1163,7 @@ static int omap_sham_final(struct ahash_request *req) * If buffersize is less than 240, 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 < 240) return omap_sham_final_shash(req); else if (ctx->bufcnt) return omap_sham_enqueue(req, OP_FINAL); |