Staging: speakup: kobjects.c: Remove explicit NULL comparison

---
 drivers/staging/speakup/kobjects.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)
 
diff --git a/drivers/staging/speakup/kobjects.c b/drivers/staging/speakup/kobjects.c
index 958add4..fdfeb42 100644
--- a/drivers/staging/speakup/kobjects.c
+++ b/drivers/staging/speakup/kobjects.c
@@ -368,7 +368,7 @@ static ssize_t synth_show(struct kobject *kobj, struct kobj_attribute *attr,
 {
 	int rv;
 
-	if (synth == NULL)
+	if (!synth)
 		rv = sprintf(buf, "%s\n", "none");
 	else
 		rv = sprintf(buf, "%s\n", synth->name);
@@ -459,14 +459,14 @@ static ssize_t punc_show(struct kobject *kobj, struct kobj_attribute *attr,
 	unsigned long flags;
 
 	p_header = spk_var_header_by_name(attr->attr.name);
-	if (p_header == NULL) {
+	if (!p_header) {
 		pr_warn("p_header is null, attr->attr.name is %s\n",
 			attr->attr.name);
 		return -EINVAL;
 	}
 
 	var = spk_get_punc_var(p_header->var_id);
-	if (var == NULL) {
+	if (!var) {
 		pr_warn("var is null, p_header->var_id is %i\n",
 				p_header->var_id);
 		return -EINVAL;
@@ -501,14 +501,14 @@ static ssize_t punc_store(struct kobject *kobj, struct kobj_attribute *attr,
 		return -EINVAL;
 
 	p_header = spk_var_header_by_name(attr->attr.name);
-	if (p_header == NULL) {
+	if (!p_header) {
 		pr_warn("p_header is null, attr->attr.name is %s\n",
 			attr->attr.name);
 		return -EINVAL;
 	}
 
 	var = spk_get_punc_var(p_header->var_id);
-	if (var == NULL) {
+	if (!var) {
 		pr_warn("var is null, p_header->var_id is %i\n",
 				p_header->var_id);
 		return -EINVAL;
@@ -546,7 +546,7 @@ ssize_t spk_var_show(struct kobject *kobj, struct kobj_attribute *attr,
 	unsigned long flags;
 
 	param = spk_var_header_by_name(attr->attr.name);
-	if (param == NULL)
+	if (!param)
 		return -EINVAL;
 
 	spin_lock_irqsave(&speakup_info.spinlock, flags);
@@ -622,9 +622,9 @@ ssize_t spk_var_store(struct kobject *kobj, struct kobj_attribute *attr,
 	unsigned long flags;
 
 	param = spk_var_header_by_name(attr->attr.name);
-	if (param == NULL)
+	if (!param)
 		return -EINVAL;
-	if (param->data == NULL)
+	if (!param->data)
 		return 0;
 	ret = 0;
 	cp = (char *)buf;