[PATCH] drm/amdgpu: Fix the compilation error with arch=UM

[Koba Ko]

Config with arch=UM and would trigger this compiltaion error.

  In file included from arch/x86/um/asm/processor.h:41,
                    from include/linux/spinlock_up.h:8,
                    from include/linux/spinlock.h:92,
                    from include/linux/mmzone.h:8,
                    from include/linux/gfp.h:6,
                    from include/linux/slab.h:15,
                    from drivers/gpu/drm/amd/amdgpu/../pm/inc/pp_debug.h:35,
                    from drivers/gpu/drm/amd/amdgpu/../pm/powerplay/hwmgr/smu7_hwmgr.c:23:
   drivers/gpu/drm/amd/amdgpu/../pm/powerplay/hwmgr/smu7_hwmgr.c: In function 'intel_core_rkl_chk':
   arch/um/include/asm/processor-generic.h:104:19: error: called object is not a function or function pointer
     104 | #define cpu_data (&boot_cpu_data)
         |                  ~^~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../pm/powerplay/hwmgr/smu7_hwmgr.c:1742:27: note: in expansion of macro 'cpu_data'
    1742 |  struct cpuinfo_x86 *c = &cpu_data(0);
         |                           ^~~~~~~~
>> drivers/gpu/drm/amd/amdgpu/../pm/powerplay/hwmgr/smu7_hwmgr.c:1744:11: error: dereferencing pointer to incomplete type 'struct cpuinfo_x86'
    1744 |  return (c->x86 == 6 && c->x86_model == INTEL_FAM6_ROCKETLAKE);
         |           ^~
   drivers/gpu/drm/amd/amdgpu/../pm/powerplay/hwmgr/smu7_hwmgr.c:1748:1: error: control reaches end of non-void function [-Werror=return-type]
    1748 | }
         | ^
   cc1: some warnings being treated as errors

With arch=UM, can't get x86 type and model,
so just skip the x86 cpu checking.

Reported-by: kernel test robot <lkp at intel.com>
Fixes: b3dc549986eb ("drm/amdgpu: Disable PCIE_DPM on Intel RKL Platform")
Signed-off-by: Koba Ko <Koba.ko at canonical.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_crat.c               | 6 +++---
 drivers/gpu/drm/amd/amdkfd/kfd_topology.c           | 3 ++-
 drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c | 2 +-
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
index cfedfb1e8596..e2e4205dbdd8 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
@@ -1675,7 +1675,7 @@ static int kfd_fill_mem_info_for_cpu(int numa_node_id, int *avail_size,
 	return 0;
 }
 
-#ifdef CONFIG_X86_64
+#if IS_ENABLED(CONFIG_X86_64) && !IS_ENABLED(CONFIG_UML)
 static int kfd_fill_iolink_info_for_cpu(int numa_node_id, int *avail_size,
 				uint32_t *num_entries,
 				struct crat_subtype_iolink *sub_type_hdr)
@@ -1734,7 +1734,7 @@ static int kfd_create_vcrat_image_cpu(void *pcrat_image, size_t *size)
 	struct crat_subtype_generic *sub_type_hdr;
 	int avail_size = *size;
 	int numa_node_id;
-#ifdef CONFIG_X86_64
+#if IS_ENABLED(CONFIG_X86_64) && !IS_ENABLED(CONFIG_UML)
 	uint32_t entries = 0;
 #endif
 	int ret = 0;
@@ -1799,7 +1799,7 @@ static int kfd_create_vcrat_image_cpu(void *pcrat_image, size_t *size)
 			sub_type_hdr->length);
 
 		/* Fill in Subtype: IO Link */
-#ifdef CONFIG_X86_64
+#if IS_ENABLED(CONFIG_X86_64) && !IS_ENABLED(CONFIG_UML)
 		ret = kfd_fill_iolink_info_for_cpu(numa_node_id, &avail_size,
 				&entries,
 				(struct crat_subtype_iolink *)sub_type_hdr);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index 98cca5f2b27f..2a8fed2b9f01 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -1549,7 +1549,8 @@ static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask)
 	first_cpu_of_numa_node = cpumask_first(cpumask);
 	if (first_cpu_of_numa_node >= nr_cpu_ids)
 		return -1;
-#ifdef CONFIG_X86_64
+
+#if IS_ENABLED(CONFIG_X86_64) && !IS_ENABLED(CONFIG_UML)
 	return cpu_data(first_cpu_of_numa_node).apicid;
 #else
 	return first_cpu_of_numa_node;
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
index e7803ce8f67a..c39e0e6ca057 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
@@ -1738,7 +1738,7 @@ static int smu7_disable_dpm_tasks(struct pp_hwmgr *hwmgr)
 
 static bool intel_core_rkl_chk(void)
 {
-#if IS_ENABLED(CONFIG_X86_64)
+#if IS_ENABLED(CONFIG_X86_64) && !IS_ENABLED(CONFIG_UML)
 	struct cpuinfo_x86 *c = &cpu_data(0);
 
 	return (c->x86 == 6 && c->x86_model == INTEL_FAM6_ROCKETLAKE);
-- 
2.25.1