From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 01/19] x86, apic: Move irq_remapping_enabled checks into IRQ-remapping code Date: Tue, 20 Nov 2012 14:12:38 +0100 Message-ID: <1353417176-18945-2-git-send-email-joro@8bytes.org> References: <1353417176-18945-1-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: <1353417176-18945-1-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: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" Cc: Suresh Siddha , x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Yinghai Lu , Sebastian Andrzej Siewior List-Id: iommu@lists.linux-foundation.org Move the three easy to move checks in the x86' apic.c file into the IRQ-remapping code. Signed-off-by: Joerg Roedel Acked-by: Sebastian Andrzej Siewior --- arch/x86/kernel/apic/apic.c | 9 +++------ drivers/iommu/irq_remapping.c | 11 +++++++++-- 2 files changed, 12 insertions(+), 8 deletions(-) diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index b17416e..69cba83 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1444,8 +1444,7 @@ void __init bsp_end_local_APIC_setup(void) * Now that local APIC setup is completed for BP, configure the fault * handling for interrupt remapping. */ - if (irq_remapping_enabled) - irq_remap_enable_fault_handling(); + irq_remap_enable_fault_handling(); } @@ -2218,8 +2217,7 @@ static int lapic_suspend(void) local_irq_save(flags); disable_local_APIC(); - if (irq_remapping_enabled) - irq_remapping_disable(); + irq_remapping_disable(); local_irq_restore(flags); return 0; @@ -2287,8 +2285,7 @@ static void lapic_resume(void) apic_write(APIC_ESR, 0); apic_read(APIC_ESR); - if (irq_remapping_enabled) - irq_remapping_reenable(x2apic_mode); + irq_remapping_reenable(x2apic_mode); local_irq_restore(flags); } diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c index faf85d6..19381b9 100644 --- a/drivers/iommu/irq_remapping.c +++ b/drivers/iommu/irq_remapping.c @@ -87,7 +87,9 @@ int __init irq_remapping_enable(void) void irq_remapping_disable(void) { - if (!remap_ops || !remap_ops->disable) + if (!irq_remapping_enabled || + !remap_ops || + !remap_ops->disable) return; remap_ops->disable(); @@ -95,7 +97,9 @@ void irq_remapping_disable(void) int irq_remapping_reenable(int mode) { - if (!remap_ops || !remap_ops->reenable) + if (!irq_remapping_enabled || + !remap_ops || + !remap_ops->reenable) return 0; return remap_ops->reenable(mode); @@ -103,6 +107,9 @@ int irq_remapping_reenable(int mode) int __init irq_remap_enable_fault_handling(void) { + if (!irq_remapping_enabled) + return 0; + if (!remap_ops || !remap_ops->enable_faulting) return -ENODEV; -- 1.7.9.5