From 249a95b93015b3d15102d15af87858779e861ac0 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 21 Sep 2023 16:15:14 +0200
Subject: [PATCH 012/204] drm/amd/display: Add a warning if the FPU is used
 outside from task context.

Add a warning if the FPU is used from any context other than task
context. This is only precaution since the code is not able to be used
from softirq while the API allows it on x86 for instance.

Link: https://lore.kernel.org/r/20230921141516.520471-4-bigeasy@linutronix.de
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-6.6.58-rt45/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c
===================================================================
@ linux-6.6.58-rt45/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c:87 @ void dc_fpu_begin(const char *function_n
 {
 	int depth;
 
+	WARN_ON_ONCE(!in_task());
 	preempt_disable();
 	depth = __this_cpu_inc_return(fpu_recursion_depth);