bus: imx-weim: improve error handling upon child probe-failure

Probe all children of the WEIM node, reporting any failures.  Report
failure from parsing of WEIM node itself if probes of all children fail.

Signed-off-by: Alison Chaiken <alison_chaiken@mentor.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

1 files changed, 7 insertions, 6 deletions

diff --git a/drivers/bus/imx-weim.c b/drivers/bus/imx-weim.c
index 0958b6981773..e98d15eaa799 100644
--- a/drivers/bus/imx-weim.c
+++ b/drivers/bus/imx-weim.c
@@ -142,7 +142,7 @@ static int __init weim_parse_dt(struct platform_device *pdev,
                                                            &pdev->dev);
         const struct imx_weim_devtype *devtype = of_id->data;
         struct device_node *child;
-        int ret;
+        int ret, have_child = 0;
 
         if (devtype == &imx50_weim_devtype) {
                 ret = imx_weim_gpr_setup(pdev);
@@ -155,14 +155,15 @@ static int __init weim_parse_dt(struct platform_device *pdev,
                         continue;
 
                 ret = weim_timing_setup(child, base, devtype);
-                if (ret) {
-                        dev_err(&pdev->dev, "%s set timing failed.\n",
+                if (ret)
+                        dev_warn(&pdev->dev, "%s set timing failed.\n",
                                 child->full_name);
-                        return ret;
-                }
+                else
+                        have_child = 1;
         }
 
-        ret = of_platform_populate(pdev->dev.of_node,
+        if (have_child)
+                ret = of_platform_populate(pdev->dev.of_node,
                                    of_default_bus_match_table,
                                    NULL, &pdev->dev);
         if (ret)