From: Maxime Ripard maxime@cerno.tech
commit bf6de8e61509f3c957d7f75f017b18d40a18a950 upstream.
The current code does a binary OR on the possible_crtcs variable of the TXP encoder, while we want to set it to that value instead.
Cc: stable@vger.kernel.org # v5.9+ Fixes: 39fcb2808376 ("drm/vc4: txp: Turn the TXP into a CRTC of its own") Acked-by: Thomas Zimmermann tzimmermann@suse.de Signed-off-by: Maxime Ripard maxime@cerno.tech Link: https://patchwork.freedesktop.org/patch/msgid/20210507150515.257424-2-maxime... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/vc4/vc4_txp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/vc4/vc4_txp.c +++ b/drivers/gpu/drm/vc4/vc4_txp.c @@ -507,7 +507,7 @@ static int vc4_txp_bind(struct device *d return ret;
encoder = &txp->connector.encoder; - encoder->possible_crtcs |= drm_crtc_mask(crtc); + encoder->possible_crtcs = drm_crtc_mask(crtc);
ret = devm_request_irq(dev, irq, vc4_txp_interrupt, 0, dev_name(dev), txp);