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| author |   Tero Kristo <t-kristo@ti.com> | 2019-11-05 16:01:06 +0200 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2019-12-11 16:36:59 +0800 |
| commit | 5d5f3eed29379b3edc499729bb6f8651a9848fe4 (patch) | |
| tree | 7a5f613caba029891ff0b9eb431a97108a8dae4e /drivers/crypto/omap-aes-gcm.c | |
| parent | crypto: omap-aes-gcm - use the AES library to encrypt the tag (diff) | |
| download | linux-dev-5d5f3eed29379b3edc499729bb6f8651a9848fe4.tar.xz linux-dev-5d5f3eed29379b3edc499729bb6f8651a9848fe4.zip | |
crypto: omap-aes-gcm - fix failure with assocdata only
If we only have assocdata with an omap-aes-gcm, it currently just
completes it directly without passing it over to the crypto HW. This
produces wrong results.
Fix by passing the request down to the crypto HW, and fix the DMA
support code to accept a case where we don't expect any output data.
In the case where only assocdata is provided, it just passes through
the accelerator and provides authentication results, without any
encrypted/decrypted buffer via DMA.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/omap-aes-gcm.c')
| -rw-r--r-- | drivers/crypto/omap-aes-gcm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/crypto/omap-aes-gcm.c b/drivers/crypto/omap-aes-gcm.c index 6da05149b195..e92000846f16 100644 --- a/drivers/crypto/omap-aes-gcm.c +++ b/drivers/crypto/omap-aes-gcm.c @@ -244,7 +244,7 @@ static int omap_aes_gcm_handle_queue(struct omap_aes_dev *dd, err = omap_aes_write_ctrl(dd); if (!err) { - if (dd->in_sg_len && dd->out_sg_len) + if (dd->in_sg_len) err = omap_aes_crypt_dma_start(dd); else omap_aes_gcm_dma_out_callback(dd); |