iommu: parisc: make the IOMMUs respect the segment boundary limits

Make PARISC's two IOMMU implementations not allocate a memory area spanning
LLD's segment boundary.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/parisc/Kconfig b/drivers/parisc/Kconfig
index 1d3b84b4af3f..553a9905299a 100644
--- a/drivers/parisc/Kconfig
+++ b/drivers/parisc/Kconfig
@@ -103,6 +103,11 @@ config IOMMU_SBA
         depends on PCI_LBA
         default PCI_LBA
 
+config IOMMU_HELPER
+        bool
+        depends on IOMMU_SBA || IOMMU_CCIO
+        default y
+
 #config PCI_EPIC
 #       bool "EPIC/SAGA PCI support"
 #       depends on PCI