lkml.org 
[lkml]   [2017]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] gpu: drm: amd: amdgpu: remove dead code
Local variable use_doorbell is assigned to a constant value and it is never
updated again. Remove this variable and the dead code it guards.

Addresses-Coverity-ID: 1401837
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 20 ++++++--------------
1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index 1f93545..27ea28f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -2936,7 +2936,6 @@ static int gfx_v7_0_cp_compute_resume(struct amdgpu_device *adev)
{
int r, i, j;
u32 tmp;
- bool use_doorbell = true;
u64 hqd_gpu_addr;
u64 mqd_gpu_addr;
u64 eop_gpu_addr;
@@ -3034,10 +3033,7 @@ static int gfx_v7_0_cp_compute_resume(struct amdgpu_device *adev)
/* enable doorbell? */
mqd->queue_state.cp_hqd_pq_doorbell_control =
RREG32(mmCP_HQD_PQ_DOORBELL_CONTROL);
- if (use_doorbell)
- mqd->queue_state.cp_hqd_pq_doorbell_control |= CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_EN_MASK;
- else
- mqd->queue_state.cp_hqd_pq_doorbell_control &= ~CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_EN_MASK;
+ mqd->queue_state.cp_hqd_pq_doorbell_control |= CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_EN_MASK;
WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL,
mqd->queue_state.cp_hqd_pq_doorbell_control);

@@ -3116,23 +3112,19 @@ static int gfx_v7_0_cp_compute_resume(struct amdgpu_device *adev)
mqd->queue_state.cp_hqd_pq_rptr_report_addr_hi);

/* enable the doorbell if requested */
- if (use_doorbell) {
- mqd->queue_state.cp_hqd_pq_doorbell_control =
+ mqd->queue_state.cp_hqd_pq_doorbell_control =
RREG32(mmCP_HQD_PQ_DOORBELL_CONTROL);
- mqd->queue_state.cp_hqd_pq_doorbell_control &=
+ mqd->queue_state.cp_hqd_pq_doorbell_control &=
~CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET_MASK;
- mqd->queue_state.cp_hqd_pq_doorbell_control |=
+ mqd->queue_state.cp_hqd_pq_doorbell_control |=
(ring->doorbell_index <<
CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT);
- mqd->queue_state.cp_hqd_pq_doorbell_control |=
+ mqd->queue_state.cp_hqd_pq_doorbell_control |=
CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_EN_MASK;
- mqd->queue_state.cp_hqd_pq_doorbell_control &=
+ mqd->queue_state.cp_hqd_pq_doorbell_control &=
~(CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_SOURCE_MASK |
CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_HIT_MASK);

- } else {
- mqd->queue_state.cp_hqd_pq_doorbell_control = 0;
- }
WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL,
mqd->queue_state.cp_hqd_pq_doorbell_control);

--
2.5.0
\
 
 \ /
  Last update: 2017-05-08 18:42    [W:0.037 / U:49.840 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site