staging: kpc2000: simplify comparisons to NULL in core.c

Fixes checkpatch.pl warnings "Comparison to NULL could be written [...]"
and "Comparisons should place the constant on the right side of the
test".

Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/kpc2000/kpc2000/core.c b/drivers/staging/kpc2000/kpc2000/core.c
index 7f257c2..356a272 100644 (file)
--- a/drivers/staging/kpc2000/kpc2000/core.c
+++ b/drivers/staging/kpc2000/kpc2000/core.c
@@ -319,7 +319,7 @@ static int kp2000_pcie_probe(struct pci_dev *pdev,
         * Step 1: Allocate a struct for the pcard
         */
        pcard = kzalloc(sizeof(struct kp2000_device), GFP_KERNEL);
-       if (NULL == pcard) {
+       if (!pcard) {
                dev_err(&pdev->dev,
                        "probe: failed to allocate private card data\n");
                return -ENOMEM;
@@ -363,7 +363,7 @@ static int kp2000_pcie_probe(struct pci_dev *pdev,
        reg_bar_phys_len = pci_resource_len(pcard->pdev, REG_BAR);
 
        pcard->regs_bar_base = ioremap_nocache(reg_bar_phys_addr, PAGE_SIZE);
-       if (NULL == pcard->regs_bar_base) {
+       if (!pcard->regs_bar_base) {
                dev_err(&pcard->pdev->dev,
                        "probe: REG_BAR could not remap memory to virtual space\n");
                err = -ENODEV;
@@ -396,7 +396,7 @@ static int kp2000_pcie_probe(struct pci_dev *pdev,
 
        pcard->dma_bar_base = ioremap_nocache(dma_bar_phys_addr,
                                              dma_bar_phys_len);
-       if (NULL == pcard->dma_bar_base) {
+       if (!pcard->dma_bar_base) {
                dev_err(&pcard->pdev->dev,
                        "probe: DMA_BAR could not remap memory to virtual space\n");
                err = -ENODEV;
@@ -546,7 +546,7 @@ static void kp2000_pcie_remove(struct pci_dev *pdev)
 
        dev_dbg(&pdev->dev, "kp2000_pcie_remove(pdev=%p)\n", pdev);
 
-       if (pcard == NULL)
+       if (!pcard)
                return;
 
        mutex_lock(&pcard->sem);
@@ -555,12 +555,12 @@ static void kp2000_pcie_remove(struct pci_dev *pdev)
        sysfs_remove_files(&(pdev->dev.kobj), kp_attr_list);
        free_irq(pcard->pdev->irq, pcard);
        pci_disable_msi(pcard->pdev);
-       if (pcard->dma_bar_base != NULL) {
+       if (pcard->dma_bar_base) {
                iounmap(pcard->dma_bar_base);
                pci_release_region(pdev, DMA_BAR);
                pcard->dma_bar_base = NULL;
        }
-       if (pcard->regs_bar_base != NULL) {
+       if (pcard->regs_bar_base) {
                iounmap(pcard->regs_bar_base);
                pci_release_region(pdev, REG_BAR);
                pcard->regs_bar_base = NULL;