omap: iommu-load cam register before flushing the entry
The flush_iotlb_page is not loading the cam register before flushing
the cam entry. This causes wrong entry to be flushed out from the TLB, and
if the entry happens to be a locked TLB entry it would lead to MMU faults.
The fix is to load the cam register with the address to be flushed before
flushing the TLB entry.
Signed-off-by: Hari Kanigeri <h-kanigeri2@ti.com>
Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
index a202a2c..6cd151b 100644
--- a/arch/arm/plat-omap/iommu.c
+++ b/arch/arm/plat-omap/iommu.c
@@ -320,6 +320,7 @@
if ((start <= da) && (da < start + bytes)) {
dev_dbg(obj->dev, "%s: %08x<=%08x(%x)\n",
__func__, start, da, bytes);
+ iotlb_load_cr(obj, &cr);
iommu_write_reg(obj, 1, MMU_FLUSH_ENTRY);
}
}