OMAPDSS: SDI: Add error handling for sdi_probe_pdata

Add proper error handling for sdi_probe_pdata(). This will cause
EPROBE_DEFER to be properly passed upwards, causing the SDI driver to be
probed again later if a resource was missing.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 15 insertions, 7 deletions

diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c
index af7d6aefe423..0bcd30272f69 100644
--- a/drivers/video/omap2/dss/sdi.c
+++ b/drivers/video/omap2/dss/sdi.c
@@ -296,7 +296,7 @@ static struct omap_dss_device *sdi_find_dssdev(struct platform_device *pdev)
         return def_dssdev;
 }
 
-static void sdi_probe_pdata(struct platform_device *sdidev)
+static int sdi_probe_pdata(struct platform_device *sdidev)
 {
         struct omap_dss_device *plat_dssdev;
         struct omap_dss_device *dssdev;
@@ -305,11 +305,11 @@ static void sdi_probe_pdata(struct platform_device *sdidev)
         plat_dssdev = sdi_find_dssdev(sdidev);
 
         if (!plat_dssdev)
-                return;
+                return 0;
 
         dssdev = dss_alloc_and_init_device(&sdidev->dev);
         if (!dssdev)
-                return;
+                return -ENOMEM;
 
         dss_copy_device_pdata(dssdev, plat_dssdev);
 
@@ -317,7 +317,7 @@ static void sdi_probe_pdata(struct platform_device *sdidev)
         if (r) {
                 DSSERR("device %s init failed: %d\n", dssdev->name, r);
                 dss_put_device(dssdev);
-                return;
+                return r;
         }
 
         r = omapdss_output_set_device(&sdi.output, dssdev);
@@ -325,7 +325,7 @@ static void sdi_probe_pdata(struct platform_device *sdidev)
                 DSSERR("failed to connect output to new device: %s\n",
                                 dssdev->name);
                 dss_put_device(dssdev);
-                return;
+                return r;
         }
 
         r = dss_add_device(dssdev);
@@ -333,8 +333,10 @@ static void sdi_probe_pdata(struct platform_device *sdidev)
                 DSSERR("device %s register failed: %d\n", dssdev->name, r);
                 omapdss_output_unset_device(&sdi.output);
                 dss_put_device(dssdev);
-                return;
+                return r;
         }
+
+        return 0;
 }
 
 static void sdi_init_output(struct platform_device *pdev)
@@ -359,9 +361,15 @@ static void __exit sdi_uninit_output(struct platform_device *pdev)
 
 static int omap_sdi_probe(struct platform_device *pdev)
 {
+        int r;
+
         sdi_init_output(pdev);
 
-        sdi_probe_pdata(pdev);
+        r = sdi_probe_pdata(pdev);
+        if (r) {
+                sdi_uninit_output(pdev);
+                return r;
+        }
 
         return 0;
 }