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authorOhad Ben-Cohen <ohad@wizery.com>2011-08-16 15:19:10 +0300
committerJoerg Roedel <joerg.roedel@amd.com>2011-08-26 11:46:00 +0200
commit5da14a471455bd725534d18604b4d89ffbe158df (patch)
tree32265ab3d038268d55709394855726487fce5d17 /drivers/iommu/omap-iommu.c
parente1f2381332825f04b9816f354fdd48f17dc6193d (diff)
downloadlinux-5da14a471455bd725534d18604b4d89ffbe158df.tar.gz
omap: iommu: PREFETCH_IOTLB cleanup
Use PREFETCH_IOTLB to control the content of the called function, instead of inlining it in the code. This improves readability of the code, and also prevents an "unused function" warning to show up when PREFETCH_IOTLB isn't set. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/omap-iommu.c')
-rw-r--r--drivers/iommu/omap-iommu.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index 3aad2e34cba..966093a2fcf 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -253,6 +253,7 @@ static struct cr_regs __iotlb_read_cr(struct iommu *obj, int n)
* @obj: target iommu
* @e: an iommu tlb entry info
**/
+#ifdef PREFETCH_IOTLB
static int load_iotlb_entry(struct iommu *obj, struct iotlb_entry *e)
{
int err = 0;
@@ -310,6 +311,20 @@ out:
return err;
}
+#else /* !PREFETCH_IOTLB */
+
+static int load_iotlb_entry(struct iommu *obj, struct iotlb_entry *e)
+{
+ return 0;
+}
+
+#endif /* !PREFETCH_IOTLB */
+
+static int prefetch_iotlb_entry(struct iommu *obj, struct iotlb_entry *e)
+{
+ return load_iotlb_entry(obj, e);
+}
+
/**
* flush_iotlb_page - Clear an iommu tlb entry
* @obj: target iommu
@@ -663,10 +678,8 @@ int iopgtable_store_entry(struct iommu *obj, struct iotlb_entry *e)
flush_iotlb_page(obj, e->da);
err = iopgtable_store_entry_core(obj, e);
-#ifdef PREFETCH_IOTLB
if (!err)
- load_iotlb_entry(obj, e);
-#endif
+ prefetch_iotlb_entry(obj, e);
return err;
}
EXPORT_SYMBOL_GPL(iopgtable_store_entry);