ARM: cleanup: soc_device_register() error checking

soc_device_register() never returns NULL, it only ever returns an
error pointer or a valid pointer.  Use the right function (IS_ERR())
to check this.

soc_device_to_device() only ever returns &soc_dev->dev, and so can
never return an error or NULL if the pointer passed into it was
valid, so there's no point checking its return.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 6 insertions, 12 deletions

diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 11e2a4145807..61225e12a749 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -540,16 +540,14 @@ static void __init ap_init_of(void)
                                            'A' + (ap_sc_id & 0x0f));
 
         soc_dev = soc_device_register(soc_dev_attr);
-        if (IS_ERR_OR_NULL(soc_dev)) {
+        if (IS_ERR(soc_dev)) {
                 kfree(soc_dev_attr->revision);
                 kfree(soc_dev_attr);
                 return;
         }
 
         parent = soc_device_to_device(soc_dev);
-
-        if (!IS_ERR_OR_NULL(parent))
-                integrator_init_sysfs(parent, ap_sc_id);
+        integrator_init_sysfs(parent, ap_sc_id);
 
         of_platform_populate(root, of_default_bus_match_table,
                         ap_auxdata_lookup, parent);
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index 7322838c0447..601618903dfb 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -364,17 +364,14 @@ static void __init intcp_init_of(void)
                                            'A' + (intcp_sc_id & 0x0f));
 
         soc_dev = soc_device_register(soc_dev_attr);
-        if (IS_ERR_OR_NULL(soc_dev)) {
+        if (IS_ERR(soc_dev)) {
                 kfree(soc_dev_attr->revision);
                 kfree(soc_dev_attr);
                 return;
         }
 
         parent = soc_device_to_device(soc_dev);
-
-        if (!IS_ERR_OR_NULL(parent))
-                integrator_init_sysfs(parent, intcp_sc_id);
-
+        integrator_init_sysfs(parent, intcp_sc_id);
         of_platform_populate(root, of_default_bus_match_table,
                         intcp_auxdata_lookup, parent);
 }
diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c
index 721e7b4275f3..a48026651504 100644
--- a/arch/arm/mach-ux500/cpu.c
+++ b/arch/arm/mach-ux500/cpu.c
@@ -145,14 +145,13 @@ struct device * __init ux500_soc_device_init(const char *soc_id)
         soc_info_populate(soc_dev_attr, soc_id);
 
         soc_dev = soc_device_register(soc_dev_attr);
-        if (IS_ERR_OR_NULL(soc_dev)) {
+        if (IS_ERR(soc_dev)) {
                 kfree(soc_dev_attr);
                 return NULL;
         }
 
         parent = soc_device_to_device(soc_dev);
-        if (!IS_ERR_OR_NULL(parent))
-                device_create_file(parent, &ux500_soc_attr);
+        device_create_file(parent, &ux500_soc_attr);
 
         return parent;
 }