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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@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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@ -175,7 +175,7 @@ static int instantiate_rng(struct device *ctrldev, int state_handle_mask,
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{
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struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev);
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struct caam_ctrl __iomem *ctrl;
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u32 *desc, status, rdsta_val;
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u32 *desc, status = 0, rdsta_val;
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int ret = 0, sh_idx;
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ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl;
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@ -207,7 +207,8 @@ static int instantiate_rng(struct device *ctrldev, int state_handle_mask,
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* CAAM eras), then try again.
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*/
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rdsta_val = rd_reg32(&ctrl->r4tst[0].rdsta) & RDSTA_IFMASK;
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if (status || !(rdsta_val & (1 << sh_idx)))
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if ((status && status != JRSTA_SSRC_JUMP_HALT_CC) ||
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!(rdsta_val & (1 << sh_idx)))
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ret = -EAGAIN;
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if (ret)
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break;
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