diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 57a87a001b4f..5103d4b140ee 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -5840,19 +5840,21 @@ static resource_size_t pci_specified_resource_alignment(struct pci_dev *dev, while (*p) { count = 0; if (sscanf(p, "%d%n", &align_order, &count) == 1 && - p[count] == '@') { + p[count] == '@') { p += count + 1; + if (align_order > 63) { + pr_err("PCI: Invalid requested alignment (order %d)\n", + align_order); + align_order = PAGE_SHIFT; + } } else { - align_order = -1; + align_order = PAGE_SHIFT; } ret = pci_dev_str_match(dev, p, &p); if (ret == 1) { *resize = true; - if (align_order == -1) - align = PAGE_SIZE; - else - align = 1 << align_order; + align = 1 << align_order; break; } else if (ret < 0) { pr_err("PCI: Can't parse resource_alignment parameter: %s\n", |