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bc551d776b
It has been observed that resetting force in the detect function can
result in the PHY being powered down in response to hot-plug detect
being asserted, even when the HDMI connector is forced on.
Enabling debug messages and adding a call to dump_stack() in
dw_hdmi_phy_power_off() shows the following in dmesg:
[ 160.637413] dwhdmi-rockchip ff940000.hdmi: EVENT=plugin
[ 160.637433] dwhdmi-rockchip ff940000.hdmi: PHY powered down in 0 iterations
Call trace:
dw_hdmi_phy_power_off
dw_hdmi_phy_disable
dw_hdmi_update_power
dw_hdmi_detect
dw_hdmi_connector_detect
drm_helper_probe_detect_ctx
drm_helper_hpd_irq_event
dw_hdmi_irq
irq_thread_fn
irq_thread
kthread
ret_from_fork
Fixes:
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.. | ||
dw-hdmi-ahb-audio.c | ||
dw-hdmi-audio.h | ||
dw-hdmi-cec.c | ||
dw-hdmi-cec.h | ||
dw-hdmi-i2s-audio.c | ||
dw-hdmi.c | ||
dw-hdmi.h | ||
dw-mipi-dsi.c | ||
Kconfig | ||
Makefile |