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[ Upstream commit9ec9b2a308] The IPA interrupt can fire when pm_runtime is disabled due to it racing with the PM suspend/resume code. This causes a splat in the interrupt handler when it tries to call pm_runtime_get(). Explicitly disable the interrupt in our ->suspend callback, and re-enable it in ->resume to avoid this. If there is an interrupt pending it will be handled after resuming. The interrupt is a wake_irq, as a result even when disabled if it fires it will cause the system to wake from suspend as well as cancel any suspend transition that may be in progress. If there is an interrupt pending, the ipa_isr_thread handler will be called after resuming. Fixes:1aac309d32("net: ipa: use autosuspend") Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> Reviewed-by: Alex Elder <elder@linaro.org> Link: https://lore.kernel.org/r/20230115175925.465918-1-caleb.connolly@linaro.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.