diff options
| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-02-19 14:07:32 +0800 |
|---|---|---|
| committer | Joerg Roedel <joro@8bytes.org> | 2014-03-04 17:51:04 +0100 |
| commit | b683b230a244c3b2b3f6f3292e59d4a63298528b (patch) | |
| tree | a63de166724a05b0a5fff0f23ab2dd83ec65d0b7 /drivers/iommu/dmar.c | |
| parent | b5f82ddf22725146d926c56ea4cb80df9b34b6b9 (diff) | |
| download | op-kernel-dev-b683b230a244c3b2b3f6f3292e59d4a63298528b.zip op-kernel-dev-b683b230a244c3b2b3f6f3292e59d4a63298528b.tar.gz | |
iommu/vt-d: Introduce macro for_each_dev_scope() to walk device scope entries
Introduce for_each_dev_scope()/for_each_active_dev_scope() to walk
{active} device scope entries. This will help following RCU lock
related patches.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'drivers/iommu/dmar.c')
| -rw-r--r-- | drivers/iommu/dmar.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index 58dde75..4ae6df2 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -170,9 +170,12 @@ int __init dmar_parse_dev_scope(void *start, void *end, int *cnt, void dmar_free_dev_scope(struct pci_dev ***devices, int *cnt) { + int i; + struct pci_dev *tmp_dev; + if (*devices && *cnt) { - while (--*cnt >= 0) - pci_dev_put((*devices)[*cnt]); + for_each_active_dev_scope(*devices, *cnt, i, tmp_dev) + pci_dev_put(tmp_dev); kfree(*devices); *devices = NULL; *cnt = 0; @@ -402,10 +405,11 @@ static int dmar_pci_device_match(struct pci_dev *devices[], int cnt, struct pci_dev *dev) { int index; + struct pci_dev *tmp; while (dev) { - for (index = 0; index < cnt; index++) - if (dev == devices[index]) + for_each_active_dev_scope(devices, cnt, index, tmp) + if (dev == tmp) return 1; /* Check our parent */ @@ -452,7 +456,7 @@ int __init dmar_dev_scope_init(void) if (list_empty(&dmar_drhd_units)) goto fail; - list_for_each_entry(drhd, &dmar_drhd_units, list) { + for_each_drhd_unit(drhd) { ret = dmar_parse_dev(drhd); if (ret) goto fail; |
