target/linux/layerscape/patches-5.4/701-net-0188-staging-dpaa2-evb-Defer-probe-if-no-mc-portal-is-fou.patch

   1 From ac03137b2283c45ad0538188728d9691fa7a4883 Mon Sep 17 00:00:00 2001
   2 From: Razvan Stefanescu <razvan.stefanescu@nxp.com>
   3 Date: Mon, 30 Apr 2018 11:27:27 +0300
   4 Subject: [PATCH] staging: dpaa2-evb: Defer probe if no mc portal is found
   5
   6 Signed-off-by: Razvan Stefanescu <razvan.stefanescu@nxp.com>
   7 ---
   8  drivers/staging/fsl-dpaa2/evb/evb.c | 8 ++++++--
   9  1 file changed, 6 insertions(+), 2 deletions(-)
  10
  11 --- a/drivers/staging/fsl-dpaa2/evb/evb.c
  12 +++ b/drivers/staging/fsl-dpaa2/evb/evb.c
  13 @@ -1206,10 +1206,14 @@ static int evb_probe(struct fsl_mc_devic
  14
  15         err = fsl_mc_portal_allocate(evb_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
  16                                      &priv->mc_io);
  17 -       if (unlikely(err)) {
  18 -               dev_err(dev, "fsl_mc_portal_allocate err %d\n", err);
  19 +       if (err) {
  20 +               if (err == -ENXIO)
  21 +                       err = -EPROBE_DEFER;
  22 +               else
  23 +                       dev_err(dev, "fsl_mc_portal_allocate err %d\n", err);
  24                 goto err_free_netdev;
  25         }
  26 +
  27         if (!priv->mc_io) {
  28                 dev_err(dev, "fsl_mc_portal_allocate returned null handle but no error\n");
  29                 err = -EFAULT;