staging: unisys: fix NULL pointer comparisons in uislib.c

Change pointer comparisons to NULL to just use the pointer directly.

Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/unisys/uislib/uislib.c b/drivers/staging/unisys/uislib/uislib.c
index d23e0df..f93d0bb 100644 (file)
--- a/drivers/staging/unisys/uislib/uislib.c
+++ b/drivers/staging/unisys/uislib/uislib.c
@@ -281,7 +281,7 @@ destroy_bus(struct controlvm_message *msg, char *buf)
 
        /* verify that this bus has no devices. */
        for (i = 0; i < bus->device_count; i++) {
-               if (bus->device[i] != NULL) {
+               if (bus->device[i]) {
                        read_unlock(&bus_list_lock);
                        return CONTROLVM_RESP_ERROR_BUS_DEVICE_ATTACHED;
                }
@@ -964,7 +964,7 @@ uislib_cache_alloc(struct kmem_cache *cur_pool, char *fn, int ln)
        */
        void *p = kmem_cache_alloc(cur_pool, GFP_ATOMIC | __GFP_NORETRY);
 
-       if (p == NULL)
+       if (!p)
                return NULL;
        return p;
 }
@@ -973,7 +973,7 @@ EXPORT_SYMBOL_GPL(uislib_cache_alloc);
 void
 uislib_cache_free(struct kmem_cache *cur_pool, void *p, char *fn, int ln)
 {
-       if (p == NULL)
+       if (!p)
                return;
        kmem_cache_free(cur_pool, p);
 }
@@ -1052,10 +1052,10 @@ static ssize_t info_debugfs_read(struct file *file, char __user *buf,
        int remaining_bytes = PROC_READ_BUFFER_SIZE;
 
 /* *start = buf; */
-       if (debug_buf == NULL) {
+       if (!debug_buf) {
                debug_buf = vmalloc(PROC_READ_BUFFER_SIZE);
 
-               if (debug_buf == NULL)
+               if (!debug_buf)
                        return -ENOMEM;
        }
 
@@ -1158,7 +1158,7 @@ static int process_incoming(void *v)
                                * Reschedule work to occur as soon as
                                * possible. */
                                idle_cycles = 0;
-                               if (new_tail == NULL) {
+                               if (!new_tail) {
                                        dev->first_busy_cnt++;
                                        if (!
                                            (list_is_last
@@ -1174,7 +1174,7 @@ static int process_incoming(void *v)
                        if (kthread_should_stop())
                                break;
                }
-               if (new_tail != NULL) {
+               if (new_tail) {
                        tot_moved_to_tail_cnt++;
                        list_move_tail(new_tail, &poll_dev_chan);
                }