From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiang Liu Subject: [Patch v2 12/16] iommu/amd: Check for irq-remap support amd_iommu_prepare() Date: Wed, 7 Jan 2015 15:31:39 +0800 Message-ID: <1420615903-28253-13-git-send-email-jiang.liu@linux.intel.com> References: <1420615903-28253-1-git-send-email-jiang.liu@linux.intel.com> Return-path: In-Reply-To: <1420615903-28253-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Thomas Gleixner , Joerg Roedel , Benjamin Herrenschmidt , Ingo Molnar , "H. Peter Anvin" , Yinghai Lu , Borislav Petkov Cc: Joerg Roedel , Tony Luck , x86@kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Jiang Liu List-Id: iommu@lists.linux-foundation.org From: Joerg Roedel This allows to get rid of the irq_remapping_supported() function and all its call-backs into the Intel and AMD IOMMU drivers. Signed-off-by: Joerg Roedel Signed-off-by: Jiang Liu --- drivers/iommu/amd_iommu_init.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index b0522f15730f..0039f87f48b8 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -2123,6 +2123,9 @@ static int __init iommu_go_to_state(enum iommu_init_state state) #ifdef CONFIG_IRQ_REMAP int __init amd_iommu_prepare(void) { + if (!amd_iommu_irq_remap) + return -1; + return iommu_go_to_state(IOMMU_ACPI_FINISHED); } -- 1.7.10.4