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crypto: caam - Fix the error handling in caam_probe

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In the error path we should disable the resources that were previously
acquired, so fix the error handling accordingly.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Horia Geant? <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Fabio Estevam 2015-08-21 13:51:58 -03:00 committed by Herbert Xu
parent 9f587fa29f
commit 31f44d1507
1 changed files with 25 additions and 11 deletions
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36
drivers/crypto/caam/ctrl.c
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@ -474,27 +474,27 @@ static int caam_probe(struct platform_device *pdev)
ret = clk_prepare_enable(ctrlpriv->caam_ipg);
if (ret < 0) {
dev_err(&pdev->dev, "can't enable CAAM ipg clock: %d\n", ret);
return -ENODEV;
return ret;
}
ret = clk_prepare_enable(ctrlpriv->caam_mem);
if (ret < 0) {
dev_err(&pdev->dev, "can't enable CAAM secure mem clock: %d\n",
ret);
return -ENODEV;
goto disable_caam_ipg;
}
ret = clk_prepare_enable(ctrlpriv->caam_aclk);
if (ret < 0) {
dev_err(&pdev->dev, "can't enable CAAM aclk clock: %d\n", ret);
return -ENODEV;
goto disable_caam_mem;
}
ret = clk_prepare_enable(ctrlpriv->caam_emi_slow);
if (ret < 0) {
dev_err(&pdev->dev, "can't enable CAAM emi slow clock: %d\n",
ret);
return -ENODEV;
goto disable_caam_aclk;
}
/* Get configuration properties from device tree */
@ -502,7 +502,8 @@ static int caam_probe(struct platform_device *pdev)
ctrl = of_iomap(nprop, 0);
if (ctrl == NULL) {
dev_err(dev, "caam: of_iomap() failed\n");
return -ENOMEM;
ret = -ENOMEM;
goto disable_caam_emi_slow;
}
/* Finding the page size for using the CTPR_MS register */
comp_params = rd_reg32(&ctrl->perfmon.comp_parms_ms);
@ -586,8 +587,8 @@ static int caam_probe(struct platform_device *pdev)
sizeof(struct platform_device *) * rspec,
GFP_KERNEL);
if (ctrlpriv->jrpdev == NULL) {
iounmap(ctrl);
return -ENOMEM;
ret = -ENOMEM;
goto iounmap_ctrl;
}
ring = 0;
@ -627,8 +628,8 @@ static int caam_probe(struct platform_device *pdev)
/* If no QI and no rings specified, quit and go home */
if ((!ctrlpriv->qi_present) && (!ctrlpriv->total_jobrs)) {
dev_err(dev, "no queues configured, terminating\n");
caam_remove(pdev);
return -ENOMEM;
ret = -ENOMEM;
goto caam_remove;
}
cha_vid_ls = rd_reg32(&ctrl->perfmon.cha_id_ls);
@ -685,8 +686,7 @@ static int caam_probe(struct platform_device *pdev)
} while ((ret == -EAGAIN) && (ent_delay < RTSDCTL_ENT_DLY_MAX));
if (ret) {
dev_err(dev, "failed to instantiate RNG");
caam_remove(pdev);
return ret;
goto caam_remove;
}
/*
* Set handles init'ed by this module as the complement of the
@ -790,6 +790,20 @@ static int caam_probe(struct platform_device *pdev)
&ctrlpriv->ctl_tdsk_wrap);
#endif
return 0;
caam_remove:
caam_remove(pdev);
iounmap_ctrl:
iounmap(ctrl);
disable_caam_emi_slow:
clk_disable_unprepare(ctrlpriv->caam_emi_slow);
disable_caam_aclk:
clk_disable_unprepare(ctrlpriv->caam_aclk);
disable_caam_mem:
clk_disable_unprepare(ctrlpriv->caam_mem);
disable_caam_ipg:
clk_disable_unprepare(ctrlpriv->caam_ipg);
return ret;
}
static struct of_device_id caam_match[] = {