lkml.org 
[lkml]   [2018]   [Aug]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] gpu: drm: radeon: radeon_test: Replace mdelay() with msleep()
Date
radeon_test_ring_sync() and radeon_test_ring_sync2() are never 
called in atomic context.
They call mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep().

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
---
drivers/gpu/drm/radeon/radeon_test.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_test.c b/drivers/gpu/drm/radeon/radeon_test.c
index f5e9abfadb56..411efa303f54 100644
--- a/drivers/gpu/drm/radeon/radeon_test.c
+++ b/drivers/gpu/drm/radeon/radeon_test.c
@@ -347,7 +347,7 @@ void radeon_test_ring_sync(struct radeon_device *rdev,
if (r)
goto out_cleanup;

- mdelay(1000);
+ msleep(1000);

if (radeon_fence_signaled(fence1)) {
DRM_ERROR("Fence 1 signaled without waiting for semaphore.\n");
@@ -368,7 +368,7 @@ void radeon_test_ring_sync(struct radeon_device *rdev,
goto out_cleanup;
}

- mdelay(1000);
+ msleep(1000);

if (radeon_fence_signaled(fence2)) {
DRM_ERROR("Fence 2 signaled without waiting for semaphore.\n");
@@ -441,7 +441,7 @@ static void radeon_test_ring_sync2(struct radeon_device *rdev,
if (r)
goto out_cleanup;

- mdelay(1000);
+ msleep(1000);

if (radeon_fence_signaled(fenceA)) {
DRM_ERROR("Fence A signaled without waiting for semaphore.\n");
@@ -461,7 +461,7 @@ static void radeon_test_ring_sync2(struct radeon_device *rdev,
radeon_ring_unlock_commit(rdev, ringC, false);

for (i = 0; i < 30; ++i) {
- mdelay(100);
+ msleep(100);
sigA = radeon_fence_signaled(fenceA);
sigB = radeon_fence_signaled(fenceB);
if (sigA || sigB)
@@ -486,7 +486,7 @@ static void radeon_test_ring_sync2(struct radeon_device *rdev,
radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
radeon_ring_unlock_commit(rdev, ringC, false);

- mdelay(1000);
+ msleep(1000);

r = radeon_fence_wait(fenceA, false);
if (r) {
--
2.17.0
\
 
 \ /
  Last update: 2018-08-04 02:01    [W:0.031 / U:2.320 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site