[PATCH 2/2] powerpc/powernv: Use common code for the symbol_map export

[Oliver O'Halloran]

On Fri, Oct 4, 2019 at 7:24 PM kbuild test robot <lkp at intel.com> wrote:
>
> Hi Oliver,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on powerpc/next]
> [cannot apply to v5.4-rc1 next-20191004]
> [if your patch is applied to the wrong git tree, please drop us a note to help
> improve the system. BTW, we also suggest to use '--base' option to specify the
> base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
>
> url:    https://github.com/0day-ci/linux/commits/Oliver-O-Halloran/powerpc-powernv-Rework-exports-to-support-subnodes/20191004-165257
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
> config: powerpc-allyesconfig (attached as .config)
> compiler: powerpc64-linux-gcc (GCC) 7.4.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         GCC_VERSION=7.4.0 make.cross ARCH=powerpc
>
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp at intel.com>
>
> All errors (new ones prefixed by >>):
>
>    arch/powerpc/platforms/powernv/opal.c: In function 'opal_export_attrs':
> >> arch/powerpc/platforms/powernv/opal.c:817:2: error: 'rc' undeclared (first use in this function); did you mean 'rq'?
>      rc = opal_add_one_export(opal_kobj, "symbol_map",
>      ^~
>      rq
>    arch/powerpc/platforms/powernv/opal.c:817:2: note: each undeclared identifier is reported only once for each function it appears in
>

I really need to start checking stuff still compiles after a rebase

*sigh*

>    787
>    788  /*
>    789   * opal_export_attrs: creates a sysfs node for each property listed in
>    790   * the device-tree under /ibm,opal/firmware/exports/
>    791   * All new sysfs nodes are created under /opal/exports/.
>    792   * This allows for reserved memory regions (e.g. HDAT) to be read.
>    793   * The new sysfs nodes are only readable by root.
>    794   */
>    795  static void opal_export_attrs(void)
>    796  {
>    797          struct device_node *np;
>    798          struct kobject *kobj;
>    799
>    800          np = of_find_node_by_path("/ibm,opal/firmware/exports");
>    801          if (!np)
>    802                  return;
>    803
>    804          /* Create new 'exports' directory - /sys/firmware/opal/exports */
>    805          kobj = kobject_create_and_add("exports", opal_kobj);
>    806          if (!kobj) {
>    807                  pr_warn("kobject_create_and_add() of exports failed\n");
>    808                  return;
>    809          }
>    810
>    811          opal_add_exported_attrs(np, kobj);
>    812
>    813          /*
>    814           * NB: symbol_map existed before the generic export interface so it
>    815           * lives under the top level opal_kobj.
>    816           */
>  > 817          rc = opal_add_one_export(opal_kobj, "symbol_map",
>    818                                   np->parent, "symbol-map");
>    819          if (rc)
>    820                  pr_warn("Error %d creating OPAL symbols file\n", rc);
>    821
>    822          of_node_put(np);
>    823  }
>    824
>
> ---
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