diff options
Diffstat (limited to 'drivers/crypto/fsl/rng.c')
| -rw-r--r-- | drivers/crypto/fsl/rng.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/crypto/fsl/rng.c b/drivers/crypto/fsl/rng.c index 786a710f5fb..06f37a8b4de 100644 --- a/drivers/crypto/fsl/rng.c +++ b/drivers/crypto/fsl/rng.c @@ -23,11 +23,26 @@ struct caam_rng_priv { u8 data[CAAM_RNG_MAX_FIFO_STORE_SIZE] __aligned(ARCH_DMA_MINALIGN); }; +static int caam_init_desc(struct caam_rng_priv *priv) +{ + ulong size = ALIGN(CAAM_RNG_DESC_LEN, ARCH_DMA_MINALIGN); + + inline_cnstr_jobdesc_rng(priv->desc, priv->data, + CAAM_RNG_MAX_FIFO_STORE_SIZE); + + flush_dcache_range((unsigned long)priv->desc, + (unsigned long)priv->desc + size); + + return 0; +} + static int caam_rng_read_one(struct caam_rng_priv *priv) { int size = ALIGN(CAAM_RNG_MAX_FIFO_STORE_SIZE, ARCH_DMA_MINALIGN); int ret; + caam_init_desc(priv); + ret = run_descriptor_jr(priv->desc); if (ret < 0) return -EIO; @@ -63,12 +78,8 @@ static int caam_rng_read(struct udevice *dev, void *data, size_t len) static int caam_rng_probe(struct udevice *dev) { struct caam_rng_priv *priv = dev_get_priv(dev); - ulong size = ALIGN(CAAM_RNG_DESC_LEN, ARCH_DMA_MINALIGN); - inline_cnstr_jobdesc_rng(priv->desc, priv->data, - CAAM_RNG_MAX_FIFO_STORE_SIZE); - flush_dcache_range((unsigned long)priv->desc, - (unsigned long)priv->desc + size); + caam_init_desc(priv); return 0; } |