parisc: pdc_stable: Fix kdoc and compiler warnings

Signed-off-by: Helge Deller <deller@gmx.de>

drivers/parisc/pdc_stable.c

@@ -509,6 +509,8 @@ static struct pdcspath_entry *pdcspath_entries[] = {
 
 /**
  * pdcs_size_read - Stable Storage size output.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  */
 static ssize_t pdcs_size_read(struct kobject *kobj,
@@ -528,6 +530,8 @@ static ssize_t pdcs_size_read(struct kobject *kobj,
 
 /**
  * pdcs_auto_read - Stable Storage autoboot/search flag output.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  * @knob: The PF_AUTOBOOT or PF_AUTOSEARCH flag
  */
@@ -554,6 +558,8 @@ static ssize_t pdcs_auto_read(struct kobject *kobj,
 
 /**
  * pdcs_autoboot_read - Stable Storage autoboot flag output.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  */
 static ssize_t pdcs_autoboot_read(struct kobject *kobj,
@@ -564,6 +570,8 @@ static ssize_t pdcs_autoboot_read(struct kobject *kobj,
 
 /**
  * pdcs_autosearch_read - Stable Storage autoboot flag output.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  */
 static ssize_t pdcs_autosearch_read(struct kobject *kobj,
@@ -574,6 +582,8 @@ static ssize_t pdcs_autosearch_read(struct kobject *kobj,
 
 /**
  * pdcs_timer_read - Stable Storage timer count output (in seconds).
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  *
  * The value of the timer field correponds to a number of seconds in powers of 2.
@@ -601,6 +611,8 @@ static ssize_t pdcs_timer_read(struct kobject *kobj,
 
 /**
  * pdcs_osid_read - Stable Storage OS ID register output.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  */
 static ssize_t pdcs_osid_read(struct kobject *kobj,
@@ -619,6 +631,8 @@ static ssize_t pdcs_osid_read(struct kobject *kobj,
 
 /**
  * pdcs_osdep1_read - Stable Storage OS-Dependent data area 1 output.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  *
  * This can hold 16 bytes of OS-Dependent data.
@@ -645,6 +659,8 @@ static ssize_t pdcs_osdep1_read(struct kobject *kobj,
 
 /**
  * pdcs_diagnostic_read - Stable Storage Diagnostic register output.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  *
  * I have NFC how to interpret the content of that register ;-).
@@ -669,6 +685,8 @@ static ssize_t pdcs_diagnostic_read(struct kobject *kobj,
 
 /**
  * pdcs_fastsize_read - Stable Storage FastSize register output.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  *
  * This register holds the amount of system RAM to be tested during boot sequence.
@@ -697,6 +715,8 @@ static ssize_t pdcs_fastsize_read(struct kobject *kobj,
 
 /**
  * pdcs_osdep2_read - Stable Storage OS-Dependent data area 2 output.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The output buffer to write to.
  *
  * This can hold pdcs_size - 224 bytes of OS-Dependent data, when available.
@@ -729,6 +749,8 @@ static ssize_t pdcs_osdep2_read(struct kobject *kobj,
 
 /**
  * pdcs_auto_write - This function handles autoboot/search flag modifying.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The input buffer to read from.
  * @count: The number of bytes to be read.
  * @knob: The PF_AUTOBOOT or PF_AUTOSEARCH flag
@@ -801,6 +823,8 @@ static ssize_t pdcs_auto_write(struct kobject *kobj,
 
 /**
  * pdcs_autoboot_write - This function handles autoboot flag modifying.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The input buffer to read from.
  * @count: The number of bytes to be read.
  *
@@ -817,6 +841,8 @@ static ssize_t pdcs_autoboot_write(struct kobject *kobj,
 
 /**
  * pdcs_autosearch_write - This function handles autosearch flag modifying.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The input buffer to read from.
  * @count: The number of bytes to be read.
  *
@@ -833,6 +859,8 @@ static ssize_t pdcs_autosearch_write(struct kobject *kobj,
 
 /**
  * pdcs_osdep1_write - Stable Storage OS-Dependent data area 1 input.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The input buffer to read from.
  * @count: The number of bytes to be read.
  *
@@ -870,6 +898,8 @@ static ssize_t pdcs_osdep1_write(struct kobject *kobj,
 
 /**
  * pdcs_osdep2_write - Stable Storage OS-Dependent data area 2 input.
+ * @kobj: The kobject used to share data with userspace.
+ * @attr: The kobject attributes.
  * @buf: The input buffer to read from.
  * @count: The number of bytes to be read.
  *
@@ -1023,7 +1053,7 @@ pdcs_unregister_pathentries(void)
 static int __init
 pdc_stable_init(void)
 {
-	int rc = 0, error = 0;
+	int rc = 0, error;
 	u32 result;
 
 	/* find the size of the stable storage */
@@ -1052,6 +1082,10 @@ pdc_stable_init(void)
 
 	/* Don't forget the root entries */
 	error = sysfs_create_group(stable_kobj, &pdcs_attr_group);
+	if (error) {
+		rc = -ENOMEM;
+		goto fail_ksetreg;
+	}
 
 	/* register the paths kset as a child of the stable kset */
 	paths_kset = kset_create_and_add("paths", NULL, stable_kobj);