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drm/vkms: WARN when hrtimer_forward_now fails 

Add a warn to verify the hrtimer_forward_now return and changes
ret_overrun from int to u64 to match the return value provided by
hrtimer_forward_now.

Signed-off-by: Shayenne Moura <shayenneluzmoura@gmail.com>
Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190206200813.d5w7gjpepoeeadiy@smtp.gmail.com
This commit is contained in:
Shayenne Moura 2019-02-06 18:08:13 -02:00 committed by Rodrigo Siqueira
parent 05bad2357a
commit 09ef09b4ab
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/vkms/vkms_crtc.c
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@ -16,7 +16,7 @@ static enum hrtimer_restart vkms_vblank_simulate(struct hrtimer *timer)
vblank_hrtimer);
struct drm_crtc *crtc = &output->crtc;
struct vkms_crtc_state *state = to_vkms_crtc_state(crtc->state);
int ret_overrun;
u64 ret_overrun;
bool ret;
spin_lock(&output->lock);
@ -43,6 +43,8 @@ static enum hrtimer_restart vkms_vblank_simulate(struct hrtimer *timer)
ret_overrun = hrtimer_forward_now(&output->vblank_hrtimer,
output->period_ns);
WARN_ON(ret_overrun != 1);
spin_unlock(&output->lock);
return HRTIMER_RESTART;