Hello, > Some endpoint controller drivers like pcie-qcom-ep, pcie-tegra194 call > dw_pcie_ep_cleanup() to cleanup the resources at the start of the PERST# > deassert (due to refclk dependency). By that time, debugfs won't be > registered, leading to NULL pointer dereference: > > Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 > Call trace: > dwc_pcie_debugfs_deinit+0x18/0x38 (P) > dw_pcie_ep_cleanup+0x2c/0x50 > qcom_pcie_ep_perst_irq_thread+0x278/0x5e8 > > So perform deinit only when the debugfs is initialized. Good catch! With that... Reviewed-by: Krzysztof Wilczyński <kwilczynski@xxxxxxxxxx> Thank you! Krzysztof
