From 62743a4145bb9c3fe090a48e10ddc0ebae85bfbf Mon Sep 17 00:00:00 2001 From: Horia Geant? Date: Fri, 17 Jul 2015 16:54:53 +0300 Subject: [PATCH] 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? Signed-off-by: Herbert Xu --- 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 b924477..1891809 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -175,7 +175,7 @@ static int instantiate_rng(struct device *ctrldev, int state_handle_mask, { struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); 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; @@ -207,7 +207,8 @@ static int instantiate_rng(struct device *ctrldev, int state_handle_mask, * CAAM eras), then try again. */ rdsta_val = rd_reg32(&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; -- 2.7.4