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| author |   Thara Gopinath <thara.gopinath@linaro.org> | 2021-02-11 15:01:22 -0500 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2021-03-07 15:13:16 +1100 |
| commit | f08789462255d0a2858b1d600be4099a2980a328 (patch) | |
| tree | bec2be1f3fb5c9a0ef98a8c15b48ab12d1fe130b /drivers/crypto/qce | |
| parent | crypto: qce - Return unsupported if any three keys are same for DES3 algorithms (diff) | |
| download | linux-dev-f08789462255d0a2858b1d600be4099a2980a328.tar.xz linux-dev-f08789462255d0a2858b1d600be4099a2980a328.zip | |
crypto: qce - Return error for zero length messages
Crypto engine BAM dma does not support 0 length data. Return unsupported
if zero length messages are passed for transformation.
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/qce')
| -rw-r--r-- | drivers/crypto/qce/skcipher.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/crypto/qce/skcipher.c b/drivers/crypto/qce/skcipher.c index 8aeb741ca5a3..6b3dc3a9797c 100644 --- a/drivers/crypto/qce/skcipher.c +++ b/drivers/crypto/qce/skcipher.c @@ -8,6 +8,7 @@ #include <linux/interrupt.h> #include <linux/moduleparam.h> #include <linux/types.h> +#include <linux/errno.h> #include <crypto/aes.h> #include <crypto/internal/des.h> #include <crypto/internal/skcipher.h> @@ -260,6 +261,10 @@ static int qce_skcipher_crypt(struct skcipher_request *req, int encrypt) rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT; keylen = IS_XTS(rctx->flags) ? ctx->enc_keylen >> 1 : ctx->enc_keylen; + /* CE does not handle 0 length messages */ + if (!req->cryptlen) + return 0; + /* qce is hanging when AES-XTS request len > QCE_SECTOR_SIZE and * is not a multiple of it; pass such requests to the fallback */ |