From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 3/7] iommu/amd: Add new init-state IOMMU_CMDLINE_DISABLED Date: Fri, 16 Jun 2017 16:09:56 +0200 Message-ID: <1497622200-18188-4-git-send-email-joro@8bytes.org> References: <1497622200-18188-1-git-send-email-joro@8bytes.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1497622200-18188-1-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Cc: Joerg Roedel , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: iommu@lists.linux-foundation.org From: Joerg Roedel This will be used when during initialization we detect that the iommu should be disabled. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu_init.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 28bf39c..c40adc8 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -237,6 +237,7 @@ enum iommu_init_state { IOMMU_INITIALIZED, IOMMU_NOT_FOUND, IOMMU_INIT_ERROR, + IOMMU_CMDLINE_DISABLED, }; /* Early ioapic and hpet maps from kernel command line */ @@ -2450,6 +2451,7 @@ static int __init state_next(void) break; case IOMMU_NOT_FOUND: case IOMMU_INIT_ERROR: + case IOMMU_CMDLINE_DISABLED: /* Error states => do nothing */ ret = -EINVAL; break; @@ -2467,8 +2469,9 @@ static int __init iommu_go_to_state(enum iommu_init_state state) while (init_state != state) { ret = state_next(); - if (init_state == IOMMU_NOT_FOUND || - init_state == IOMMU_INIT_ERROR) + if (init_state == IOMMU_NOT_FOUND || + init_state == IOMMU_INIT_ERROR || + init_state == IOMMU_CMDLINE_DISABLED) break; } -- 2.7.4