[SRU][OEM-5.14/J][PATCH 0/1] Apply w/a for hard hang on HPD
bin.li at canonical.com
Mon Aug 15 05:33:06 UTC 2022
When connecting the ThinkVision 24i monitor on ThinkPad L14, the kernel
kernel: watchdog: BUG: soft lockup - CPU#0 stuck for 50s! [Xorg:1829]
cherry picked from commit 2a50edbf10c8c56e930bfb53d8f9f00a33fd837e
After applying the patch, the os works fine with the external monitor.
[Where problems could occur]
This commit is clean cherry-picked for drm/amd/display, it disable
48mhz refclk off when there is any HPD status in connected state.
It should be a low risk to introduce any regression.
Qingqing Zhuo (1):
drm/amd/display: Apply w/a for hard hang on HPD
.../amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c | 12 ++++++++-
.../display/dc/irq/dcn21/irq_service_dcn21.c | 25 +++++++++++++++++++
.../display/dc/irq/dcn21/irq_service_dcn21.h | 2 ++
.../gpu/drm/amd/display/dc/irq/irq_service.c | 2 +-
.../gpu/drm/amd/display/dc/irq/irq_service.h | 4 +++
5 files changed, 43 insertions(+), 2 deletions(-)
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