target/linux/layerscape/patches-5.4/804-crypto-0008-crypto-caam-use-devres-to-populate-platform-devices.patch

   1 From 7200bc3a88315a59e7094bf111c7816f0298923f Mon Sep 17 00:00:00 2001
   2 From: Andrey Smirnov <andrew.smirnov@gmail.com>
   3 Date: Tue, 22 Oct 2019 08:30:12 -0700
   4 Subject: [PATCH] crypto: caam - use devres to populate platform devices
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Use devres to de-initialize the RNG and drop explicit de-initialization
  10 code in caam_remove().
  11
  12 Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
  13 Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
  14 Cc: Chris Healy <cphealy@gmail.com>
  15 Cc: Lucas Stach <l.stach@pengutronix.de>
  16 Cc: Horia Geantă <horia.geanta@nxp.com>
  17 Cc: Herbert Xu <herbert@gondor.apana.org.au>
  18 Cc: Iuliana Prodan <iuliana.prodan@nxp.com>
  19 Cc: linux-crypto@vger.kernel.org
  20 Cc: linux-kernel@vger.kernel.org
  21 Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
  22 (cherry picked from commit 1a1c4f004444ebb962a02b7fc6d534e0f2ed9acb)
  23 ---
  24  drivers/crypto/caam/ctrl.c | 26 +++-----------------------
  25  1 file changed, 3 insertions(+), 23 deletions(-)
  26
  27 --- a/drivers/crypto/caam/ctrl.c
  28 +++ b/drivers/crypto/caam/ctrl.c
  29 @@ -321,20 +321,6 @@ static int instantiate_rng(struct device
  30         return ret;
  31  }
  32
  33 -static int caam_remove(struct platform_device *pdev)
  34 -{
  35 -       struct device *ctrldev;
  36 -       struct caam_drv_private *ctrlpriv;
  37 -
  38 -       ctrldev = &pdev->dev;
  39 -       ctrlpriv = dev_get_drvdata(ctrldev);
  40 -
  41 -       /* Remove platform devices under the crypto node */
  42 -       of_platform_depopulate(ctrldev);
  43 -
  44 -       return 0;
  45 -}
  46 -
  47  /*
  48   * kick_trng - sets the various parameters for enabling the initialization
  49   *            of the RNG4 block in CAAM
  50 @@ -759,7 +745,7 @@ static int caam_probe(struct platform_de
  51  #endif
  52         }
  53
  54 -       ret = of_platform_populate(nprop, caam_match, NULL, dev);
  55 +       ret = devm_of_platform_populate(dev);
  56         if (ret) {
  57                 dev_err(dev, "JR platform devices creation error\n");
  58                 return ret;
  59 @@ -781,8 +767,7 @@ static int caam_probe(struct platform_de
  60         /* If no QI and no rings specified, quit and go home */
  61         if ((!ctrlpriv->qi_present) && (!ctrlpriv->total_jobrs)) {
  62                 dev_err(dev, "no queues configured, terminating\n");
  63 -               ret = -ENOMEM;
  64 -               goto caam_remove;
  65 +               return -ENOMEM;
  66         }
  67
  68         if (ctrlpriv->era < 10)
  69 @@ -845,7 +830,7 @@ static int caam_probe(struct platform_de
  70                 } while ((ret == -EAGAIN) && (ent_delay < RTSDCTL_ENT_DLY_MAX));
  71                 if (ret) {
  72                         dev_err(dev, "failed to instantiate RNG");
  73 -                       goto caam_remove;
  74 +                       return ret;
  75                 }
  76                 /*
  77                  * Set handles init'ed by this module as the complement of the
  78 @@ -919,10 +904,6 @@ static int caam_probe(struct platform_de
  79                             &ctrlpriv->ctl_tdsk_wrap);
  80  #endif
  81         return 0;
  82 -
  83 -caam_remove:
  84 -       caam_remove(pdev);
  85 -       return ret;
  86  }
  87
  88  static struct platform_driver caam_driver = {
  89 @@ -931,7 +912,6 @@ static struct platform_driver caam_drive
  90                 .of_match_table = caam_match,
  91         },
  92         .probe       = caam_probe,
  93 -       .remove      = caam_remove,
  94  };
  95
  96  module_platform_driver(caam_driver);