From: "Yipeng Chen (Jasber)" yipeng.chen@amd.com
[Why] Enabled ABM (level != 0) would raise short pluse irq DC_IRQ_SOURCE_HPD1RX randomly with PSR error LINK_CRC_ERROR. Actually there is no hot plugging on EDP panel. After correcting CRC error, there is no need to send drm hotplug event.
[How] Returning false would skip doing hot-plug when handle_hpd_irq_psr_sink() handled irq. Hot-plug process causes visible flicking on overlay.
Signed-off-by: Yipeng Chen (Jasber) yipeng.chen@amd.com Reviewed-by: Roman Li Roman.Li@amd.com Anthony Koo Anthony.Koo@amd.com --- drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 1e4794e2825c..9b9fbe5e9bd4 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -3007,7 +3007,7 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd
if (handle_hpd_irq_psr_sink(link)) /* PSR-related error was detected and handled */ - return true; + return false;
/* If PSR-related error handled, Main link may be off, * so do not handle as a normal sink status change interrupt.