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Other types of irq should only be fired during linked state, except misc irq. Masking it to keep suspend and resume in noirq environment, otherwise we might occur accessing dbi in irq for hot reset case while resuming haven't finished, which causing the system hung. Thread #1 (Suspended : Step) dw_pcie_read() at pcie - designware.c:106 0xfffffc0106809d0 dw_pcie_read_dbi() at pcie - designware.c:147 0xfffffc0106809d0 dw_pcie_readl_dbi() at pcie - designware.h:315 0xfffffc01068686c rk_pcie_sys_irq_handler() at pcie - rockchip.c:1,432 0xfffffc01068686c __handle_irq_event_percpu() at handle.c:156 0xfffffc0100ccd50 handle_irq_event_percpu() at handle.c:196 0xfffffc0100cd03c handle_irq_event() at handle.c:213 0xfffffc0100cd03c handle_fasteoi_irq() at chip.c:732 0xfffffc0100d2b00 generic_handle_irq_desc() at irqdesc.h:152 0xfffffc0100cbc70 __handle_domain_irq() at irqdesc.c:693 0xfffffc0100cbc70 <...more frames...> Fixes: bb9632320ba7 ("PCI: dw: rockchip: Support rockchip_dw_pcie_pm_ctrl_for_user") Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Change-Id: I2bff726b30c0c5fcaef62aa5cc80548aedbb4505
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.