diff mbox

[v2,1/3] crypto: caam: ctrl: Fix the error handling

Message ID 1440173804-26780-1-git-send-email-festevam@gmail.com (mailing list archive)
State Superseded
Delegated to: Herbert Xu
Headers show

Commit Message

Fabio Estevam Aug. 21, 2015, 4:16 p.m. UTC
From: Fabio Estevam <fabio.estevam@freescale.com>

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>
---
Changes since v1:
- None

 drivers/crypto/caam/ctrl.c | 35 ++++++++++++++++++++++++-----------
 1 file changed, 24 insertions(+), 11 deletions(-)

Comments

Horia Geantă Aug. 21, 2015, 4:37 p.m. UTC | #1
On 8/21/2015 7:16 PM, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
> 
> 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>

For the series:
Reviewed-by: Horia Geant? <horia.geanta@freescale.com>

Thanks!
Horia


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Fabio Estevam Aug. 21, 2015, 4:43 p.m. UTC | #2
On Fri, Aug 21, 2015 at 1:16 PM, Fabio Estevam <festevam@gmail.com> wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
>
> 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>
> ---
> Changes since v1:
> - None
>
>  drivers/crypto/caam/ctrl.c | 35 ++++++++++++++++++++++++-----------
>  1 file changed, 24 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
> index 81b552d..9c5ca46 100644
> --- a/drivers/crypto/caam/ctrl.c
> +++ b/drivers/crypto/caam/ctrl.c
> @@ -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 +502,7 @@ 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;
> +               goto disable_caam_emi_slow;

Ops, I missed a 'ret = -ENOMEM' here.

Will send a v3.
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diff mbox

Patch

diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 81b552d..9c5ca46 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -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 +502,7 @@  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;
+		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 +586,8 @@  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 +627,8 @@  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 +685,7 @@  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 +789,20 @@  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[] = {