drm/amd/powerplay: move amdgpu_irq_src to the smu structure allocation

Rather than allocating it dynamically at runtime considering it is only
several bytes in size.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/amdgpu_smu.c

@@ -1102,9 +1102,6 @@ static int smu_sw_fini(void *handle)
 	struct smu_context *smu = &adev->smu;
 	int ret;
 
-	kfree(smu->irq_source);
-	smu->irq_source = NULL;
-
 	ret = smu_smc_table_sw_fini(smu);
 	if (ret) {
 		pr_err("Failed to sw fini smc table!\n");

drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h

@@ -356,7 +356,7 @@ struct smu_baco_context
 struct smu_context
 {
 	struct amdgpu_device            *adev;
-	struct amdgpu_irq_src		*irq_source;
+	struct amdgpu_irq_src		irq_source;
 
 	const struct pptable_funcs	*ppt_funcs;
 	struct mutex			mutex;

drivers/gpu/drm/amd/powerplay/smu_v11_0.c

@@ -1174,7 +1174,7 @@ int smu_v11_0_enable_thermal_alert(struct smu_context *smu)
 		if (ret)
 			return ret;
 
-		ret = amdgpu_irq_get(adev, smu->irq_source, 0);
+		ret = amdgpu_irq_get(adev, &smu->irq_source, 0);
 		if (ret)
 			return ret;
 
@@ -1198,7 +1198,7 @@ int smu_v11_0_enable_thermal_alert(struct smu_context *smu)
 
 int smu_v11_0_disable_thermal_alert(struct smu_context *smu)
 {
-	return amdgpu_irq_put(smu->adev, smu->irq_source, 0);
+	return amdgpu_irq_put(smu->adev, &smu->irq_source, 0);
 }
 
 static uint16_t convert_to_vddc(uint8_t vid)
@@ -1615,18 +1615,9 @@ static const struct amdgpu_irq_src_funcs smu_v11_0_irq_funcs =
 int smu_v11_0_register_irq_handler(struct smu_context *smu)
 {
 	struct amdgpu_device *adev = smu->adev;
-	struct amdgpu_irq_src *irq_src = smu->irq_source;
+	struct amdgpu_irq_src *irq_src = &smu->irq_source;
 	int ret = 0;
 
-	/* already register */
-	if (irq_src)
-		return 0;
-
-	irq_src = kzalloc(sizeof(struct amdgpu_irq_src), GFP_KERNEL);
-	if (!irq_src)
-		return -ENOMEM;
-	smu->irq_source = irq_src;
-
 	irq_src->num_types = 1;
 	irq_src->funcs = &smu_v11_0_irq_funcs;