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Some local interrupts are not initialised properly at the moment and cannot be used since the domain's alloc method is never called for them. This has been observed earlier and partially fixed in commite875bd66df("irqchip/mips-gic: Fix local interrupts"), but that change still relied on the interrupt to be requested by an external driver (eg. drivers/clocksource/mips-gic-timer.c). This does however not solve the issue for interrupts that are not referenced by any driver through the device tree and results in request_irq() calls returning -ENOSYS. It can be observed when attempting to use perf tool to access hardware performance counters. Fix this by explicitly calling irq_create_fwspec_mapping() for local interrupts. Fixes:e875bd66df("irqchip/mips-gic: Fix local interrupts") Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-mips@linux-mips.org Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.