diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/amd_iommu_init.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 6ab8128db1c..5d9e45c7cea 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -21,6 +21,7 @@ #include <linux/acpi.h> #include <linux/gfp.h> #include <linux/list.h> +#include <linux/sysdev.h> #include <asm/pci-direct.h> #include <asm/amd_iommu_types.h> #include <asm/amd_iommu.h> @@ -654,6 +655,32 @@ static void __init enable_iommus(void) } } +/* + * Suspend/Resume support + * disable suspend until real resume implemented + */ + +static int amd_iommu_resume(struct sys_device *dev) +{ + return 0; +} + +static int amd_iommu_suspend(struct sys_device *dev, pm_message_t state) +{ + return -EINVAL; +} + +static struct sysdev_class amd_iommu_sysdev_class = { + .name = "amd_iommu", + .suspend = amd_iommu_suspend, + .resume = amd_iommu_resume, +}; + +static struct sys_device device_amd_iommu = { + .id = 0, + .cls = &amd_iommu_sysdev_class, +}; + int __init amd_iommu_init(void) { int i, ret = 0; @@ -745,6 +772,14 @@ int __init amd_iommu_init(void) if (ret) goto free; + ret = sysdev_class_register(&amd_iommu_sysdev_class); + if (ret) + goto free; + + ret = sysdev_register(&device_amd_iommu); + if (ret) + goto free; + enable_iommus(); printk(KERN_INFO "AMD IOMMU: aperture size is %d MB\n", |