AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

powerpc/pseries: Do not need to check for dma_window == NULL

Browse Source 
The block in pci_dma_dev_setup_pSeriesLP for dma_window == NULL can be
removed because we will only teminate the loop if we had already allocated
a iommu table for that node or we found a window.  While there may be
no window for the device, the intresting part is if we are reusing a
table or creating it for the first device under it.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Nishanth Aravamudan 2010-10-26 17:35:15 +00:00 committed by Benjamin Herrenschmidt
parent f4133236d6
commit 4af2da25ed
1 changed files with 0 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/powerpc/platforms/pseries/iommu.c
View File

@ -530,12 +530,6 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
} }
pr_debug(" parent is %s\n", pdn->full_name); pr_debug(" parent is %s\n", pdn->full_name);
if (dma_window == NULL) {
pr_debug(" no dma window for device, linking to parent\n");
set_iommu_table_base(&dev->dev, PCI_DN(pdn)->iommu_table);
return;
}
pci = PCI_DN(pdn); pci = PCI_DN(pdn);
if (!pci->iommu_table) { if (!pci->iommu_table) {
tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL, tbl = kzalloc_node(sizeof(struct iommu_table), GFP_KERNEL,