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| author | Christian Bruel <christian.bruel@foss.st.com> | 2025-11-14 08:45:52 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2025-11-17 14:32:51 -0600 |
| commit | fa81d6099007728cae39c6f937d83903bbddab5e (patch) | |
| tree | a90d5bbd392d9a2b05dd44b4b017a4b9cdda11b3 /lib/netdev-notifier-error-inject.c | |
| parent | 3a8660878839faadb4f1a6dd72c3179c1df56787 (diff) | |
PCI: stm32: Fix LTSSM EP race with start link
If the host has deasserted PERST# and started link training before the link
is started on EP side, enabling LTSSM before the endpoint registers are
initialized in the perst_irq handler results in probing incorrect values.
Thus, wait for the PERST# level-triggered interrupt to start link training
at the end of initialization and cleanup the stm32_pcie_[start stop]_link
functions.
Fixes: 151f3d29baf4 ("PCI: stm32-ep: Add PCIe Endpoint support for STM32MP25")
Signed-off-by: Christian Bruel <christian.bruel@foss.st.com>
[mani: added fixes tag]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
[bhelgaas: wrap line]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251114-perst_ep-v1-1-e7976317a890@foss.st.com
Diffstat (limited to 'lib/netdev-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions