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>
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@ -76,7 +76,7 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
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struct pci_controller *pci_ctrl = (struct pci_controller*) pdev->sysdata;
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resource_size_t ioaddr = pci_resource_start(pdev, bar);
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if (pci_ctrl == 0)
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if (!pci_ctrl)
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return -EINVAL; /* should never happen */
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/* Convert to an offset within this PCI controller */
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