crypto: caam - Fix the error handling in caam_probe

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>

1 files changed, 25 insertions, 11 deletions

diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 09c16f5ea97d..17102d62c707 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 +502,8 @@ 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[] = {