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Merge "iommu: msm: Ensure power is on in pg fault handler"

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2013-04-26 19:29:22 -07:00
committed by Gerrit - the friendly Code Review server
parent 74756163e5 055d58f1f9
commit cd15392137
1 changed files with 13 additions and 0 deletions
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drivers/iommu/msm_iommu-v1.c
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@@ -804,6 +804,19 @@ irqreturn_t msm_iommu_fault_handler_v2(int irq, void *dev_id)
ctx_drvdata = dev_get_drvdata(&pdev->dev);
BUG_ON(!ctx_drvdata);
if (!drvdata->ctx_attach_count) {
pr_err("Unexpected IOMMU page fault!\n");
pr_err("name = %s\n", drvdata->name);
pr_err("Power is OFF. Unable to read page fault information\n");
/*
* We cannot determine which context bank caused the issue so
* we just return handled here to ensure IRQ handler code is
* happy
*/
ret = IRQ_HANDLED;
goto fail;
}
ret = __enable_clocks(drvdata);
if (ret) {
ret = IRQ_NONE;