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The usage of in_interrupt() in drivers is phased out and Linus clearly requested that code which changes behaviour depending on context should either be seperated or the context be conveyed in an argument passed by the caller, which usually knows the context. brcmf_fweh_process_event() uses in_interrupt() to select the allocation mode GFP_KERNEL/GFP_ATOMIC. Aside of the above reasons this check is incomplete as it cannot detect contexts which just have preemption or interrupts disabled. All callchains leading to brcmf_fweh_process_event() can clearly identify the calling context. Convey a 'gfp' argument through the callchains and let the callers hand in the appropriate GFP mode. This has also the advantage that any change of execution context or preemption/interrupt state in these callchains will be detected by the memory allocator for all GFP_KERNEL allocations. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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.