Hi Marek, 2015-12-11 23:38 GMT+09:00 Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>: > It is allowed to enable/disable clocks from interrupts, so common Exynos > ARM clock management code for CPUfreq should use 'irqsave' version of > spin_lock calls to avoid potential deadlock caused by spin_lock recursion. > The same spin_lock is used by gate/mux clocks during enable/disable calls. > > This deadlock, can be reproduced by enabling CPUfreq (ondemand or > userspace) and decoding video with s5p-mfc driver. Good catch. Acked-by: Tomasz Figa <tomasz.figa@xxxxxxxxx> Best regards, Tomasz -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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