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xtensa: fix warning comparing pointer to 0

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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>
This commit is contained in:
Jiapeng Chong
2021-03-10 15:10:38 +08:00
committed by Max Filippov
parent 8a128bc32a
commit 9aa44cd2c2
1 changed files with 1 additions and 1 deletions
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2
arch/xtensa/kernel/pci.c
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@@ -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; struct pci_controller *pci_ctrl = (struct pci_controller*) pdev->sysdata;
resource_size_t ioaddr = pci_resource_start(pdev, bar); resource_size_t ioaddr = pci_resource_start(pdev, bar);
if (pci_ctrl == 0) if (!pci_ctrl)
return -EINVAL; /* should never happen */ return -EINVAL; /* should never happen */
/* Convert to an offset within this PCI controller */ /* Convert to an offset within this PCI controller */