target/linux/layerscape/patches-5.4/701-net-0320-staging-fsl_ppfe-eth-use-memremap-to-map-RAM-area-us.patch

   1 From 7872505a2194c9766c7986e761c0ae9bdd6e5e57 Mon Sep 17 00:00:00 2001
   2 From: Calvin Johnson <calvin.johnson@nxp.com>
   3 Date: Tue, 26 Mar 2019 16:52:22 +0530
   4 Subject: [PATCH] staging: fsl_ppfe/eth: use memremap() to map RAM area used by
   5  PFE
   6
   7 RAM area used by PFE should be mapped using memremap() instead of
   8 directly traslating physical addr to virtual. This will ensure proper
   9 checks are done before the area is used.
  10
  11 Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
  12 ---
  13  drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c | 10 ++++++----
  14  1 file changed, 6 insertions(+), 4 deletions(-)
  15
  16 --- a/drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c
  17 +++ b/drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c
  18 @@ -143,9 +143,10 @@ static int pfe_platform_probe(struct pla
  19         pfe->ddr_phys_baseaddr = res.start;
  20         pfe->ddr_size = resource_size(&res);
  21
  22 -       pfe->ddr_baseaddr = phys_to_virt(res.start);
  23 +       pfe->ddr_baseaddr = memremap(res.start, resource_size(&res),
  24 +                                    MEMREMAP_WB);
  25         if (!pfe->ddr_baseaddr) {
  26 -               pr_err("ioremap() ddr failed\n");
  27 +               pr_err("memremap() ddr failed\n");
  28                 rc = -ENOMEM;
  29                 goto err_ddr;
  30         }
  31 @@ -235,7 +236,7 @@ err_hif_irq:
  32         iounmap(pfe->cbus_baseaddr);
  33
  34  err_axi:
  35 -       iounmap(pfe->ddr_baseaddr);
  36 +       memunmap(pfe->ddr_baseaddr);
  37
  38  err_ddr:
  39         platform_set_drvdata(pdev, NULL);
  40 @@ -259,7 +260,8 @@ static int pfe_platform_remove(struct pl
  41         rc = pfe_remove(pfe);
  42
  43         iounmap(pfe->cbus_baseaddr);
  44 -       iounmap(pfe->ddr_baseaddr);
  45 +
  46 +       memunmap(pfe->ddr_baseaddr);
  47
  48         platform_set_drvdata(pdev, NULL);
  49