Merge branch 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...

[pandora-kernel.git] / drivers / pci / proc.c

diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index e1098c3..593bb84 100644 (file)
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -252,11 +252,20 @@ static int proc_bus_pci_mmap(struct file *file, struct vm_area_struct *vma)
        const struct proc_dir_entry *dp = PDE(inode);
        struct pci_dev *dev = dp->data;
        struct pci_filp_private *fpriv = file->private_data;
-       int ret;
+       int i, ret;
 
        if (!capable(CAP_SYS_RAWIO))
                return -EPERM;
 
+       /* Make sure the caller is mapping a real resource for this device */
+       for (i = 0; i < PCI_ROM_RESOURCE; i++) {
+               if (pci_mmap_fits(dev, i, vma))
+                       break;
+       }
+
+       if (i >= PCI_ROM_RESOURCE)
+               return -ENODEV;
+
        ret = pci_mmap_page_range(dev, vma,
                                  fpriv->mmap_state,
                                  fpriv->write_combine);
@@ -352,15 +361,16 @@ static int show_device(struct seq_file *m, void *v)
                        dev->vendor,
                        dev->device,
                        dev->irq);
-       /* Here should be 7 and not PCI_NUM_RESOURCES as we need to preserve compatibility */
-       for (i=0; i<7; i++) {
+
+       /* only print standard and ROM resources to preserve compatibility */
+       for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
                resource_size_t start, end;
                pci_resource_to_user(dev, i, &dev->resource[i], &start, &end);
                seq_printf(m, "\t%16llx",
                        (unsigned long long)(start |
                        (dev->resource[i].flags & PCI_REGION_FLAG_MASK)));
        }
-       for (i=0; i<7; i++) {
+       for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
                resource_size_t start, end;
                pci_resource_to_user(dev, i, &dev->resource[i], &start, &end);
                seq_printf(m, "\t%16llx",