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drm/amd/display: Add a warning if the FPU is used outside from task context.

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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.

Acked-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sebastian Andrzej Siewior
2023-09-21 16:15:14 +02:00
committed by Alex Deucher
parent 0f0e59075b
commit 80364500c0
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c
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@@ -84,6 +84,7 @@ void dc_fpu_begin(const char *function_name, const int line)
{
int depth;
WARN_ON_ONCE(!in_task());
preempt_disable();
depth = __this_cpu_inc_return(fpu_recursion_depth);