xtensa: fix warning comparing pointer to 0

Fix the following coccicheck warning:

./arch/xtensa/kernel/pci.c:79:17-18: WARNING comparing pointer to 0.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Message-Id: <1615360238-22508-1-git-send-email-jiapeng.chong@linux.alibaba.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index 3f32e275997a39859c2139e50c9dd72c93da53ba..62c900e400d6a4ed1b576d5ac1c7836fde0a4737 100644 (file)
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -76,7 +76,7 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
        struct pci_controller *pci_ctrl = (struct pci_controller*) pdev->sysdata;
        resource_size_t ioaddr = pci_resource_start(pdev, bar);
 
-       if (pci_ctrl == 0)
+       if (!pci_ctrl)
                return -EINVAL;         /* should never happen */
 
        /* Convert to an offset within this PCI controller */