Pick commit 62743a4145bb9c3fe090a48e10ddc0ebae85bfbf from Linux
upstream.
crypto: caam - fix RNG init descriptor ret. code checking
When successful, the descriptor that performs RNG initialization
is allowed to return a status code of 7000_0000h, since last command
in the descriptor is a JUMP HALT.
Signed-off-by: Horia Geant? <horia.geanta@xxxxxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Marcin Niestroj <m.niestroj@xxxxxxxxxxxxxxxx>
---
drivers/crypto/caam/ctrl.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 4deed8a19..eafff8ef0 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -170,7 +170,7 @@ static int instantiate_rng(struct device_d *ctrldev, int state_handle_mask,
{
struct caam_drv_private *ctrlpriv = ctrldev->priv;
struct caam_ctrl __iomem *ctrl;
- u32 *desc, status, rdsta_val;
+ u32 *desc, status = 0, rdsta_val;
int ret = 0, sh_idx;
ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl;
@@ -200,7 +200,8 @@ static int instantiate_rng(struct device_d *ctrldev, int state_handle_mask,
* CAAM eras), then try again.
*/
rdsta_val = readl(&ctrl->r4tst[0].rdsta) & RDSTA_IFMASK;
- if (status || !(rdsta_val & (1 << sh_idx)))
+ if ((status && status != JRSTA_SSRC_JUMP_HALT_CC) ||
+ !(rdsta_val & (1 << sh_idx)))
ret = -EAGAIN;
if (ret)
break;
--
2.18.0
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