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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2011-05-10 16:56:46 +0200
committerTony Lindgren <tony@atomide.com>2011-05-11 10:47:50 -0700
commitc56b2ddd5ff4352cdb0df07eefba8068d043382e (patch)
treee6d7e438346d0a3fe2fb2182cf10e9f28fc630b1 /arch/arm/plat-omap
parent693d92a1bbc9e42681c42ed190bd42b636ca876f (diff)
omap: iommu: Return IRQ_HANDLED in fault handler when no fault occured
Commit d594f1f31afe13edd8c02f3854a65cc58cfb3b74 (omap: IOMMU: add support to callback during fault handling) broke interrupt line sharing between the OMAP3 ISP and its IOMMU. Because of this, every interrupt generated by the OMAP3 ISP is handled by the IOMMU driver instead of being passed to the OMAP3 ISP driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap')
-rw-r--r--arch/arm/plat-omap/iommu.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
index 8a51fd58f656..34fc31ee9081 100644
--- a/arch/arm/plat-omap/iommu.c
+++ b/arch/arm/plat-omap/iommu.c
@@ -793,6 +793,8 @@ static irqreturn_t iommu_fault_handler(int irq, void *data)
clk_enable(obj->clk);
errs = iommu_report_fault(obj, &da);
clk_disable(obj->clk);
+ if (errs == 0)
+ return IRQ_HANDLED;
/* Fault callback or TLB/PTE Dynamic loading */
if (obj->isr && !obj->isr(obj, da, errs, obj->isr_priv))