Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: prevent hang on link training fail [Why] When link training fails, the phy clock will be disabled. However, in enable_streams, it is assumed that link training succeeded and the mux selects the phy clock, causing a hang when a register write is made. [How] When enable_stream is hit, check if link training failed. If it did, fall back to the ref clock to avoid a hang and keep the system in a recoverable state.
Product status
7462475e3a06fbb0b36243b391296f9f411e9041 (git) before 0363c03672cd3191f037905bf981eb523a3b71b1
7462475e3a06fbb0b36243b391296f9f411e9041 (git) before 04bf4f2a497e9877c425c5124652e61fb8a1a0aa
7462475e3a06fbb0b36243b391296f9f411e9041 (git) before 8058061ed9d6bc259d1e678607b07d259342c08f
6.3
Any version before 6.3
6.12.25 (semver)
6.14.4 (semver)
6.15 (original_commit_for_fix)
References
git.kernel.org/...c/0363c03672cd3191f037905bf981eb523a3b71b1
git.kernel.org/...c/04bf4f2a497e9877c425c5124652e61fb8a1a0aa
git.kernel.org/...c/8058061ed9d6bc259d1e678607b07d259342c08f
