target/linux/layerscape/patches-4.4/7217-dpaa2-evb-Add-object-version-check.patch

   1 From 213c59501bbd6da8c56e95f90f8a8c6af2682002 Mon Sep 17 00:00:00 2001
   2 From: Razvan Stefanescu <razvan.stefanescu@freescale.com>
   3 Date: Thu, 18 Feb 2016 10:54:40 +0200
   4 Subject: [PATCH 217/226] dpaa2-evb: Add object version check
   5
   6 Abort probing if DPDMUX object version is smaller than required.
   7
   8 Signed-off-by: Razvan Stefanescu <razvan.stefanescu@freescale.com>
   9 ---
  10  drivers/staging/fsl-dpaa2/evb/evb.c |   15 +++++++++++++++
  11  1 file changed, 15 insertions(+)
  12
  13 --- a/drivers/staging/fsl-dpaa2/evb/evb.c
  14 +++ b/drivers/staging/fsl-dpaa2/evb/evb.c
  15 @@ -44,6 +44,10 @@
  16  #include "dpdmux.h"
  17  #include "dpdmux-cmd.h"
  18
  19 +/* Minimal supported DPDMUX version */
  20 +#define DPDMUX_MIN_VER_MAJOR                   5
  21 +#define DPDMUX_MIN_VER_MINOR                   0
  22 +
  23  /* IRQ index */
  24  #define DPDMUX_MAX_IRQ_NUM                     2
  25
  26 @@ -1004,6 +1008,17 @@ static int evb_init(struct fsl_mc_device
  27                 goto err_close;
  28         }
  29
  30 +       /* Minimum supported DPDMUX version check */
  31 +       if (priv->attr.version.major < DPDMUX_MIN_VER_MAJOR ||
  32 +           (priv->attr.version.major == DPDMUX_MIN_VER_MAJOR &&
  33 +            priv->attr.version.minor < DPDMUX_MIN_VER_MINOR)) {
  34 +               dev_err(dev, "DPDMUX version %d.%d not supported. Use %d.%d or greater.\n",
  35 +                       priv->attr.version.major, priv->attr.version.minor,
  36 +                       DPDMUX_MIN_VER_MAJOR, DPDMUX_MIN_VER_MAJOR);
  37 +               err = -ENOTSUPP;
  38 +               goto err_close;
  39 +       }
  40 +
  41         err = dpdmux_reset(priv->mc_io, 0, priv->mux_handle);
  42         if (unlikely(err)) {
  43                 dev_err(dev, "dpdmux_reset err %d\n", err);