lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 25 Aug 2020 14:42:48 +0000 From: Sidong Yang <realwakka@...il.com> To: Daniel Vetter <daniel@...ll.ch>, Rodrigo Siqueira <rodrigosiqueiramelo@...il.com> Cc: Sidong Yang <realwakka@...il.com>, Haneen Mohammed <hamohammed.sa@...il.com>, melissa.srw@...il.com, Emil Velikov <emil.l.velikov@...il.com>, linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org Subject: [PATCH] drm/vkms: fix warning in vkms_get_vblank_timestamp From: Sidong Yang <realwakka@...il.com>, Haneen Mohammed <hamohammed.sa@...il.com> When vkms_get_vblank_timestamp() is called very first time without enabling vblank before, vblank time has just intial value and it makes warning message. this patch prevents warning message by setting vblank time to current time. Cc: Daniel Vetter <daniel@...ll.ch> Cc: Rodrigo Siqueira <rodrigosiqueiramelo@...il.com> Cc: Haneen Mohammed <hamohammed.sa@...il.com> Cc: Melissa Wen <melissa.srw@...il.com> Signed-off-by: Sidong Yang <realwakka@...il.com> --- drivers/gpu/drm/vkms/vkms_crtc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c index ac85e17428f8..09c012d54d58 100644 --- a/drivers/gpu/drm/vkms/vkms_crtc.c +++ b/drivers/gpu/drm/vkms/vkms_crtc.c @@ -86,6 +86,11 @@ static bool vkms_get_vblank_timestamp(struct drm_crtc *crtc, struct vkms_output *output = &vkmsdev->output; struct drm_vblank_crtc *vblank = &dev->vblank[pipe]; + if (!READ_ONCE(vblank->enabled)) { + *vblank_time = ktime_get(); + return true; + } + *vblank_time = READ_ONCE(output->vblank_hrtimer.node.expires); if (WARN_ON(*vblank_time == vblank->time)) -- 2.17.1
Powered by blists - more mailing lists