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authorShayenne Moura <shayenneluzmoura@gmail.com>2019-02-06 18:08:13 -0200
committerRodrigo Siqueira <rodrigosiqueiramelo@gmail.com>2019-02-10 09:51:11 -0200
commit09ef09b4ab95dc405ad4171ec2cd8a4ff5227108 (patch)
tree3d6502b960ba15a57fcb5a5f525d4c65068732e1 /drivers/gpu/drm/vkms
parent05bad2357afcb9f89804f04f0ae5ac58ae898ec5 (diff)
downloadlinux-09ef09b4ab95dc405ad4171ec2cd8a4ff5227108.tar.bz2
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
Diffstat (limited to 'drivers/gpu/drm/vkms')
-rw-r--r--drivers/gpu/drm/vkms/vkms_crtc.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c
index 5a095610726b..734a3e197df8 100644
--- a/drivers/gpu/drm/vkms/vkms_crtc.c
+++ b/drivers/gpu/drm/vkms/vkms_crtc.c
@@ -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;