linux-kernel - [PATCH 1/7] staging: kpc2000: simplify comparisons to NULL in core.c

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Message-Id: <20190603222916.20698-2-simon@nikanor.nu>
Date:   Tue,  4 Jun 2019 00:29:10 +0200
From:   Simon Sandström <simon@...anor.nu>
To:     gregkh@...uxfoundation.org
Cc:     simon@...anor.nu, jeremy@...zel.net, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/7] 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@...anor.nu>
---
 drivers/staging/kpc2000/kpc2000/core.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/kpc2000/kpc2000/core.c b/drivers/staging/kpc2000/kpc2000/core.c
index 7f257c21e0cc..356a272c0b9c 100644
--- 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;
-- 
2.20.1