From f34c73f55a06ac443c492fc11b85f7a44dfdc112 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 20 Oct 2015 17:33:34 +0200 Subject: [PATCH] iommu/amd: Do not BUG_ON in __detach_device() The condition in the BUG_ON is an indicator of a BUG, but no reason to kill the code path. Turn it into a WARN_ON and bail out if it is hit. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index f82060e778a2..6070b1504497 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2204,7 +2204,8 @@ static void __detach_device(struct iommu_dev_data *dev_data) struct protection_domain *domain; unsigned long flags; - BUG_ON(!dev_data->domain); + if (WARN_ON(!dev_data->domain)) + return; domain = dev_data->domain; -- 2.20.1