git/linux-net
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/ synced 2026-04-27 03:58:31 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdgpu: give warning before sleep in kiq_r/wreg

Browse Source 
to catch error that may schedule in atomic context early on

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Monk Liu
2018-03-05 19:26:36 +08:00
committed by Alex Deucher
parent 59dd477286
commit dccf1eff35
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
View File

@@ -167,6 +167,9 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
if (r < 1 && (adev->in_gpu_reset || in_interrupt()))
goto failed_kiq_read;
if (in_interrupt())
might_sleep();
while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
@@ -212,7 +215,11 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
if (r < 1 && (adev->in_gpu_reset || in_interrupt()))
goto failed_kiq_write;
if (in_interrupt())
might_sleep();
while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
}