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authorJiang Liu <jiang.liu@linux.intel.com>2015-01-07 15:31:42 +0800
committerThomas Gleixner <tglx@linutronix.de>2015-01-15 11:24:24 +0100
commit7fa1c842caca3b1d8a55a64033403cab8ca8583a (patch)
tree8c79a44fed49274c538781dafaa3071c77aa09d3
parent30969e34ae6edf10a003f6c0be1fecf6dadcd421 (diff)
iommu/irq_remapping: Change variable disable_irq_remap to be static
Change variable disable_irq_remap to be static and simplify the code. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Tested-by: Joerg Roedel <joro@8bytes.org> Cc: Tony Luck <tony.luck@intel.com> Cc: iommu@lists.linux-foundation.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Link: http://lkml.kernel.org/r/1420615903-28253-16-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--drivers/iommu/amd_iommu_init.c6
-rw-r--r--drivers/iommu/intel_irq_remapping.c5
-rw-r--r--drivers/iommu/irq_remapping.c3
-rw-r--r--drivers/iommu/irq_remapping.h2
4 files changed, 2 insertions, 14 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 970979ecbebb..e430dc8dffdf 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -2014,9 +2014,6 @@ static bool detect_ivrs(void)
/* Make sure ACS will be enabled during PCI probe */
pci_request_acs();
- if (!disable_irq_remap)
- amd_iommu_irq_remap = true;
-
return true;
}
@@ -2123,8 +2120,7 @@ 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;
+ amd_iommu_irq_remap = true;
return iommu_go_to_state(IOMMU_ACPI_FINISHED);
}
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index fb72bd5f438c..14de1ab223c8 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -588,10 +588,6 @@ static int __init intel_prepare_irq_remapping(void)
struct dmar_drhd_unit *drhd;
struct intel_iommu *iommu;
- /* First check whether IRQ remapping should be enabled */
- if (disable_irq_remap)
- return -ENODEV;
-
if (irq_remap_broken) {
printk(KERN_WARNING
"This system BIOS has enabled interrupt remapping\n"
@@ -600,7 +596,6 @@ static int __init intel_prepare_irq_remapping(void)
"interrupt remapping is being disabled. Please\n"
"contact your BIOS vendor for an update\n");
add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
- disable_irq_remap = 1;
return -ENODEV;
}
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 7d85d2ba0e8b..5585c4e17e39 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -17,12 +17,11 @@
#include "irq_remapping.h"
int irq_remapping_enabled;
-
-int disable_irq_remap;
int irq_remap_broken;
int disable_sourceid_checking;
int no_x2apic_optout;
+static int disable_irq_remap;
static struct irq_remap_ops *remap_ops;
static int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec);
diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h
index a8edfea0ab5d..c448eb48340a 100644
--- a/drivers/iommu/irq_remapping.h
+++ b/drivers/iommu/irq_remapping.h
@@ -31,7 +31,6 @@ struct cpumask;
struct pci_dev;
struct msi_msg;
-extern int disable_irq_remap;
extern int irq_remap_broken;
extern int disable_sourceid_checking;
extern int no_x2apic_optout;
@@ -86,7 +85,6 @@ extern struct irq_remap_ops amd_iommu_irq_ops;
#else /* CONFIG_IRQ_REMAP */
#define irq_remapping_enabled 0
-#define disable_irq_remap 1
#define irq_remap_broken 0
#endif /* CONFIG_IRQ_REMAP */