Hi, Icenowy, On Mon, Mar 16, 2026 at 3:53 PM Thomas Zimmermann <[email protected]> wrote: > > > > Am 14.03.26 um 17:54 schrieb Icenowy Zheng: > > As there's no known hardware capability about querying vblank on the > > 7A1000 display controller, setting get_vblank_timestamp will mislead the > > kernel about the support of DC-backed high precision vblank query. > > > > Drop this function pointer in the CRTC function table for 7A1000. > > > > This solves a kernel warning when booting Linux 7.0-rc3 on a > > 3A4000+7A1000 Haier Boyue G51 laptop (with injected EDID for replicating Please s/3A4000/Loongson-3A4000/g and s/7A1000/LS7A1000/g, thanks.
Huacai > > the display timing set by the firmware). > > > > Signed-off-by: Icenowy Zheng <[email protected]> > > Acked-by: Thomas Zimmermann <[email protected]> > > > --- > > drivers/gpu/drm/loongson/lsdc_crtc.c | 1 - > > 1 file changed, 1 deletion(-) > > > > diff --git a/drivers/gpu/drm/loongson/lsdc_crtc.c > > b/drivers/gpu/drm/loongson/lsdc_crtc.c > > index 587fbe285e9ef..b3af8e0cdb15f 100644 > > --- a/drivers/gpu/drm/loongson/lsdc_crtc.c > > +++ b/drivers/gpu/drm/loongson/lsdc_crtc.c > > @@ -721,7 +721,6 @@ static const struct drm_crtc_funcs ls7a1000_crtc_funcs > > = { > > .late_register = lsdc_crtc_late_register, > > .enable_vblank = lsdc_crtc_enable_vblank, > > .disable_vblank = lsdc_crtc_disable_vblank, > > - .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, > > .atomic_print_state = lsdc_crtc_atomic_print_state, > > }; > > > > -- > -- > Thomas Zimmermann > Graphics Driver Developer > SUSE Software Solutions Germany GmbH > Frankenstr. 146, 90461 Nürnberg, Germany, www.suse.com > GF: Jochen Jaser, Andrew McDonald, Werner Knoblich, (HRB 36809, AG Nürnberg) > >
