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s390/pci: improve bar check 

Improve the bar check in pci_iomap_range to cover functions
for which we recognize more bars than what we can access due
to AR restrictions.

Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2018-07-31 09:59:09 -04:00 committed by Martin Schwidefsky
parent a0308c1315
commit e8e25a7718
1 changed files with 1 additions and 1 deletions
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2
arch/s390/pci/pci.c
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@ -285,7 +285,7 @@ void __iomem *pci_iomap_range(struct pci_dev *pdev,
struct zpci_dev *zdev = to_zpci(pdev);
int idx;
if (!pci_resource_len(pdev, bar))
if (!pci_resource_len(pdev, bar) || bar >= PCI_BAR_COUNT)
return NULL;
idx = zdev->bars[bar].map_idx;