qcacmn: utils: Replace explicit comparison to NULL

Per the Linux Kernel coding style, as enforced by the kernel
checkpatch script, pointers should not be explicitly compared to
NULL. Therefore within utils replace any such comparisons with logical
operations performed on the pointer itself.

Change-Id: Iae6c2f2f0b3041a9397dd13092ea500a8b995fd2
CRs-Fixed: 2418251

utils/pktlog/linux_ac.c

@@ -113,7 +113,7 @@ int pktlog_alloc_buf(struct hif_opaque_softc *scn)
 	page_cnt = (sizeof(*(pl_info->buf)) + pl_info->buf_size) / PAGE_SIZE;
 
 	qdf_spin_lock_bh(&pl_info->log_lock);
-	if (pl_info->buf != NULL) {
+	if (pl_info->buf) {
 		qdf_spin_unlock_bh(&pl_info->log_lock);
 		printk(PKTLOG_TAG "Buffer is already in use\n");
 		return -EINVAL;
@@ -121,7 +121,7 @@ int pktlog_alloc_buf(struct hif_opaque_softc *scn)
 	qdf_spin_unlock_bh(&pl_info->log_lock);
 
 	buffer = vmalloc((page_cnt + 2) * PAGE_SIZE);
-	if (buffer == NULL) {
+	if (!buffer) {
 		printk(PKTLOG_TAG
 		       "%s: Unable to allocate buffer "
 		       "(%d pages)\n", __func__, page_cnt);
@@ -140,7 +140,7 @@ int pktlog_alloc_buf(struct hif_opaque_softc *scn)
 	}
 
 	qdf_spin_lock_bh(&pl_info->log_lock);
-	if (pl_info->buf != NULL)
+	if (pl_info->buf)
 		pktlog_release_buf(scn);
 
 	pl_info->buf =  buffer;
@@ -418,9 +418,9 @@ static int pktlog_attach(struct hif_opaque_softc *scn)
 	/* Allocate pktlog dev for later use */
 	pl_dev = get_pktlog_handle();
 
-	if (pl_dev != NULL) {
+	if (pl_dev) {
 		pl_info_lnx = kmalloc(sizeof(*pl_info_lnx), GFP_KERNEL);
-		if (pl_info_lnx == NULL) {
+		if (!pl_info_lnx) {
 			QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR,
 				 "%s: Allocation failed for pl_info",
 				 __func__);
@@ -454,7 +454,7 @@ static int pktlog_attach(struct hif_opaque_softc *scn)
 			g_pktlog_pde, &pktlog_fops,
 			&pl_info_lnx->info);
 
-	if (proc_entry == NULL) {
+	if (!proc_entry) {
 		printk(PKTLOG_TAG "%s: create_proc_entry failed for %s\n",
 				__func__, proc_name);
 		goto attach_fail1;
@@ -701,7 +701,7 @@ pktlog_read_proc_entry(char *buf, size_t nbytes, loff_t *ppos,
 
 	*read_complete = false;
 
-	if (log_buf == NULL) {
+	if (!log_buf) {
 		*read_complete = true;
 		qdf_spin_unlock_bh(&pl_info->log_lock);
 		return 0;
@@ -842,7 +842,7 @@ __pktlog_read(struct file *file, char *buf, size_t nbytes, loff_t *ppos)
 	qdf_spin_lock_bh(&pl_info->log_lock);
 	log_buf = pl_info->buf;
 
-	if (log_buf == NULL) {
+	if (!log_buf) {
 		qdf_spin_unlock_bh(&pl_info->log_lock);
 		return 0;
 	}
@@ -1005,7 +1005,7 @@ int pktlogmod_init(void *context)
 	/* create the proc directory entry */
 	g_pktlog_pde = proc_mkdir(PKTLOG_PROC_DIR, NULL);
 
-	if (g_pktlog_pde == NULL) {
+	if (!g_pktlog_pde) {
 		printk(PKTLOG_TAG "%s: proc_mkdir failed\n", __func__);
 		return -EPERM;
 	}
@@ -1028,7 +1028,7 @@ attach_fail:
 
 void pktlogmod_exit(void *context)
 {
-	if (g_pktlog_pde == NULL)
+	if (!g_pktlog_pde)
 		return;
 
 	pktlog_detach((struct hif_opaque_softc *)context);