Staging: xgifb: Fix comparison to NULL warning

Change comparison to NULL to a ! operation.
Found using checkpatch.

Signed-off-by: Navya Sri Nizamkari <navyasri.tech@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/xgifb/vb_init.c b/drivers/staging/xgifb/vb_init.c
index af91523..be30c13 100644 (file)
--- a/drivers/staging/xgifb/vb_init.c
+++ b/drivers/staging/xgifb/vb_init.c
@@ -850,11 +850,11 @@ static u8 *xgifb_copy_rom(struct pci_dev *dev, size_t *rom_size)
        u8 *rom_copy;
 
        rom_address = pci_map_rom(dev, rom_size);
-       if (rom_address == NULL)
+       if (!rom_address)
                return NULL;
 
        rom_copy = vzalloc(XGIFB_ROM_SIZE);
-       if (rom_copy == NULL)
+       if (!rom_copy)
                goto done;
 
        *rom_size = min_t(size_t, *rom_size, XGIFB_ROM_SIZE);
@@ -876,7 +876,7 @@ static bool xgifb_read_vbios(struct pci_dev *pdev)
        int entry;
 
        vbios = xgifb_copy_rom(pdev, &vbios_size);
-       if (vbios == NULL) {
+       if (!vbios) {
                dev_err(&pdev->dev, "Video BIOS not available\n");
                return false;
        }
@@ -1186,7 +1186,7 @@ unsigned char XGIInitNew(struct pci_dev *pdev)
 
        pVBInfo->FBAddr = HwDeviceExtension->pjVideoMemoryAddress;
 
-       if (pVBInfo->FBAddr == NULL) {
+       if (!pVBInfo->FBAddr) {
                dev_dbg(&pdev->dev, "pVBInfo->FBAddr == 0\n");
                return 0;
        }