staging: unisys: Avoid some == 0 checks

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

diff --git a/drivers/staging/unisys/visorchipset/file.c b/drivers/staging/unisys/visorchipset/file.c
index e63ef2a3a4a9eab241dab96103d3ef8709ac5416..a17027c211a2909653b59b892fe29655a487aac2 100644 (file)
--- a/drivers/staging/unisys/visorchipset/file.c
+++ b/drivers/staging/unisys/visorchipset/file.c
@@ -36,7 +36,7 @@ static struct visorchannel **file_controlvm_channel;
 void
 visorchipset_file_cleanup(dev_t major_dev)
 {
-       if (file_cdev.ops != NULL)
+       if (file_cdev.ops)
                cdev_del(&file_cdev);
        file_cdev.ops = NULL;
        unregister_chrdev_region(major_dev, 1);
@@ -47,7 +47,7 @@ visorchipset_open(struct inode *inode, struct file *file)
 {
        unsigned minor_number = iminor(inode);
 
-       if (minor_number != 0)
+       if (minor_number)
                return -ENODEV;
        file->private_data = NULL;
        return 0;
@@ -73,16 +73,16 @@ visorchipset_mmap(struct file *file, struct vm_area_struct *vma)
        switch (offset) {
        case VISORCHIPSET_MMAP_CONTROLCHANOFFSET:
                vma->vm_flags |= VM_IO;
-               if (*file_controlvm_channel == NULL) {
+               if (!*file_controlvm_channel)
                        return -ENXIO;
-               }
+
                visorchannel_read(*file_controlvm_channel,
                        offsetof(struct spar_controlvm_channel_protocol,
                                 gp_control_channel),
                        &addr, sizeof(addr));
-               if (addr == 0) {
+               if (!addr)
                        return -ENXIO;
-               }
+
                physaddr = (unsigned long)addr;
                if (remap_pfn_range(vma, vma->vm_start,
                                    physaddr >> PAGE_SHIFT,