Merge tag 'drm-amdkfd-next-2016-02-27' of git://people.freedesktop.org/~gabbayo/linux into drm-next
Here are a few amdkfd patches for 4.6. These patches defer radeon/amdgpu loading in case amdkfd is not yet loaded, by returning -EPROBE_DEFER during their probing stage. * tag 'drm-amdkfd-next-2016-02-27' of git://people.freedesktop.org/~gabbayo/linux: drm/amdgpu: Return -EPROBE_DEFER when amdkfd not loaded drm/radeon: Return -EPROBE_DEFER when amdkfd not loaded drm/amdkfd: Track when module's init is complete
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9d5d6752c7
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@ -30,25 +30,38 @@ const struct kfd2kgd_calls *kfd2kgd;
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const struct kgd2kfd_calls *kgd2kfd;
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bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
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bool amdgpu_amdkfd_init(void)
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int amdgpu_amdkfd_init(void)
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{
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int ret;
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#if defined(CONFIG_HSA_AMD_MODULE)
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bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
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int (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
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kgd2kfd_init_p = symbol_request(kgd2kfd_init);
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if (kgd2kfd_init_p == NULL)
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return false;
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return -ENOENT;
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ret = kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd);
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if (ret) {
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symbol_put(kgd2kfd_init);
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kgd2kfd = NULL;
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}
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#elif defined(CONFIG_HSA_AMD)
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ret = kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd);
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if (ret)
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kgd2kfd = NULL;
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#else
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ret = -ENOENT;
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#endif
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return true;
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return ret;
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}
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bool amdgpu_amdkfd_load_interface(struct amdgpu_device *rdev)
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{
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#if defined(CONFIG_HSA_AMD_MODULE)
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bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
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#endif
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switch (rdev->asic_type) {
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#ifdef CONFIG_DRM_AMDGPU_CIK
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case CHIP_KAVERI:
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@ -62,35 +75,7 @@ bool amdgpu_amdkfd_load_interface(struct amdgpu_device *rdev)
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return false;
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}
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#if defined(CONFIG_HSA_AMD_MODULE)
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kgd2kfd_init_p = symbol_request(kgd2kfd_init);
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if (kgd2kfd_init_p == NULL) {
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kfd2kgd = NULL;
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return false;
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}
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if (!kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd)) {
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symbol_put(kgd2kfd_init);
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kfd2kgd = NULL;
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kgd2kfd = NULL;
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return false;
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}
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return true;
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#elif defined(CONFIG_HSA_AMD)
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if (!kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd)) {
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kfd2kgd = NULL;
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kgd2kfd = NULL;
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return false;
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}
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return true;
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#else
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kfd2kgd = NULL;
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return false;
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#endif
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}
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void amdgpu_amdkfd_fini(void)
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@ -36,7 +36,7 @@ struct kgd_mem {
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void *cpu_ptr;
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};
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bool amdgpu_amdkfd_init(void);
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int amdgpu_amdkfd_init(void);
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void amdgpu_amdkfd_fini(void);
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bool amdgpu_amdkfd_load_interface(struct amdgpu_device *rdev);
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@ -310,6 +310,14 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
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return -ENODEV;
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}
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/*
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* Initialize amdkfd before starting radeon. If it was not loaded yet,
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* defer radeon probing
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*/
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ret = amdgpu_amdkfd_init();
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if (ret == -EPROBE_DEFER)
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return ret;
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/* Get rid of things like offb */
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ret = amdgpu_kick_out_firmware_fb(pdev);
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if (ret)
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@ -552,8 +560,6 @@ static int __init amdgpu_init(void)
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driver->num_ioctls = amdgpu_max_kms_ioctl;
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amdgpu_register_atpx_handler();
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amdgpu_amdkfd_init();
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/* let modprobe override vga console setting */
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return drm_pci_init(driver, pdriver);
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}
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@ -59,18 +59,23 @@ module_param(send_sigterm, int, 0444);
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MODULE_PARM_DESC(send_sigterm,
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"Send sigterm to HSA process on unhandled exception (0 = disable, 1 = enable)");
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bool kgd2kfd_init(unsigned interface_version, const struct kgd2kfd_calls **g2f)
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static int amdkfd_init_completed;
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int kgd2kfd_init(unsigned interface_version, const struct kgd2kfd_calls **g2f)
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{
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if (!amdkfd_init_completed)
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return -EPROBE_DEFER;
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/*
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* Only one interface version is supported,
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* no kfd/kgd version skew allowed.
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*/
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if (interface_version != KFD_INTERFACE_VERSION)
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return false;
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return -EINVAL;
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*g2f = &kgd2kfd;
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return true;
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return 0;
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}
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EXPORT_SYMBOL(kgd2kfd_init);
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@ -111,6 +116,8 @@ static int __init kfd_module_init(void)
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kfd_process_create_wq();
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amdkfd_init_completed = 1;
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dev_info(kfd_device, "Initialized module\n");
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return 0;
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@ -125,6 +132,8 @@ err_pasid:
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static void __exit kfd_module_exit(void)
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{
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amdkfd_init_completed = 0;
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kfd_process_destroy_wq();
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kfd_topology_shutdown();
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kfd_chardev_exit();
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@ -221,7 +221,7 @@ struct kgd2kfd_calls {
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int (*resume)(struct kfd_dev *kfd);
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};
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bool kgd2kfd_init(unsigned interface_version,
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int kgd2kfd_init(unsigned interface_version,
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const struct kgd2kfd_calls **g2f);
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#endif /* KGD_KFD_INTERFACE_H_INCLUDED */
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@ -321,6 +321,14 @@ static int radeon_pci_probe(struct pci_dev *pdev,
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{
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int ret;
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/*
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* Initialize amdkfd before starting radeon. If it was not loaded yet,
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* defer radeon probing
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*/
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ret = radeon_kfd_init();
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if (ret == -EPROBE_DEFER)
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return ret;
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/*
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* apple-gmux is needed on dual GPU MacBook Pro
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* to probe the panel if we're the inactive GPU.
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@ -581,8 +589,6 @@ static int __init radeon_init(void)
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return -EINVAL;
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}
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radeon_kfd_init();
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/* let modprobe override vga console setting */
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return drm_pci_init(driver, pdriver);
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}
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@ -132,35 +132,34 @@ static const struct kfd2kgd_calls kfd2kgd = {
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static const struct kgd2kfd_calls *kgd2kfd;
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bool radeon_kfd_init(void)
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int radeon_kfd_init(void)
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{
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int ret;
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#if defined(CONFIG_HSA_AMD_MODULE)
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bool (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
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int (*kgd2kfd_init_p)(unsigned, const struct kgd2kfd_calls**);
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kgd2kfd_init_p = symbol_request(kgd2kfd_init);
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if (kgd2kfd_init_p == NULL)
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return false;
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return -ENOENT;
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if (!kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd)) {
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ret = kgd2kfd_init_p(KFD_INTERFACE_VERSION, &kgd2kfd);
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if (ret) {
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symbol_put(kgd2kfd_init);
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kgd2kfd = NULL;
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return false;
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}
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return true;
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#elif defined(CONFIG_HSA_AMD)
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if (!kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd)) {
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ret = kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd);
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if (ret)
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kgd2kfd = NULL;
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return false;
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}
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return true;
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#else
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return false;
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ret = -ENOENT;
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#endif
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return ret;
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}
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void radeon_kfd_fini(void)
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@ -33,7 +33,7 @@
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struct radeon_device;
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bool radeon_kfd_init(void);
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int radeon_kfd_init(void);
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void radeon_kfd_fini(void);
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void radeon_kfd_suspend(struct radeon_device *rdev);
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