ACK: [SRU][OEM-5.14/J][PATCH 0/1] Apply w/a for hard hang on HPD
tim.gardner at canonical.com
Wed Aug 24 14:42:26 UTC 2022
On 8/14/22 23:33, Bin Li wrote:
> BugLink: https://bugs.launchpad.net/bugs/1985901
> When connecting the ThinkVision 24i monitor on ThinkPad L14, the kernel
> will hang.
> 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(-)
Acked-by: Tim Gardner <tim.gardner at canonical.com>
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