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drm/vgem: Remember to offset relative timeouts to mod_timer() by jiffies

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mod_timer() takes an absolute jiffie value, not a relative timeout and
quietly fixup the missed ret=0 otherwise gcc just always returns that
the fence timed out.

Testcase: igt/vgem_basic/fence
Fixes: 4077798484 ("drm/vgem: Attach sw fences to exported vGEM dma-buf")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1468834278-26716-1-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-07-18 10:31:18 +01:00 committed by Daniel Vetter
parent a026df4c5f
commit bf0901731d
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/vgem/vgem_fence.c
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@ -107,7 +107,7 @@ static struct fence *vgem_fence_create(struct vgem_file *vfile,
setup_timer(&fence->timer, vgem_fence_timeout, (unsigned long)fence);
/* We force the fence to expire within 10s to prevent driver hangs */
mod_timer(&fence->timer, VGEM_FENCE_TIMEOUT);
mod_timer(&fence->timer, jiffies + VGEM_FENCE_TIMEOUT);
return &fence->base;
}
@ -240,7 +240,7 @@ int vgem_fence_signal_ioctl(struct drm_device *dev,
struct vgem_file *vfile = file->driver_priv;
struct drm_vgem_fence_signal *arg = data;
struct fence *fence;
int ret;
int ret = 0;
if (arg->flags)
return -EINVAL;