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| author | Jiri Kosina <jkosina@suse.cz> | 2010-12-22 17:57:02 (GMT) |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2010-12-22 17:57:02 (GMT) |
| commit | 4b7bd364700d9ac8372eff48832062b936d0793b (patch) | |
| tree | 0dbf78c95456a0b02d07fcd473281f04a87e266d /drivers/pci/pci-sysfs.c | |
| parent | c0d8768af260e2cbb4bf659ae6094a262c86b085 (diff) | |
| parent | 90a8a73c06cc32b609a880d48449d7083327e11a (diff) | |
| download | linux-fsl-qoriq-4b7bd364700d9ac8372eff48832062b936d0793b.tar.xz | |
Merge branch 'master' into for-next
Conflicts:
MAINTAINERS
arch/arm/mach-omap2/pm24xx.c
drivers/scsi/bfa/bfa_fcpim.c
Needed to update to apply fixes for which the old branch was too
outdated.
Diffstat (limited to 'drivers/pci/pci-sysfs.c')
| -rw-r--r-- | drivers/pci/pci-sysfs.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index b5a7d9b..63d5042 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -705,17 +705,21 @@ void pci_remove_legacy_files(struct pci_bus *b) #ifdef HAVE_PCI_MMAP -int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma) +int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, + enum pci_mmap_api mmap_api) { - unsigned long nr, start, size; + unsigned long nr, start, size, pci_start; + if (pci_resource_len(pdev, resno) == 0) + return 0; nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; start = vma->vm_pgoff; size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; - if (start < size && size - start >= nr) + pci_start = (mmap_api == PCI_MMAP_PROCFS) ? + pci_resource_start(pdev, resno) >> PAGE_SHIFT : 0; + if (start >= pci_start && start < pci_start + size && + start + nr <= pci_start + size) return 1; - WARN(1, "process \"%s\" tried to map 0x%08lx-0x%08lx on %s BAR %d (size 0x%08lx)\n", - current->comm, start, start+nr, pci_name(pdev), resno, size); return 0; } @@ -745,8 +749,15 @@ pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, if (i >= PCI_ROM_RESOURCE) return -ENODEV; - if (!pci_mmap_fits(pdev, i, vma)) + if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) { + WARN(1, "process \"%s\" tried to map 0x%08lx bytes " + "at page 0x%08lx on %s BAR %d (start 0x%16Lx, size 0x%16Lx)\n", + current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, + pci_name(pdev), i, + (u64)pci_resource_start(pdev, i), + (u64)pci_resource_len(pdev, i)); return -EINVAL; + } /* pci_mmap_page_range() expects the same kind of entry as coming * from /proc/bus/pci/ which is a "user visible" value. If this is |