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No driver has any business with the internals of an interrupt descriptor. Storing a pointer to it just to use yet another helper at the actual usage site to retrieve the affinity mask is creative at best. Just because C does not allow encapsulation does not mean that the kernel has no limits. Retrieve a pointer to the affinity mask itself and use that. It's still using an interface which is usually not for random drivers, but definitely less hideous than the previous hack. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Tariq Toukan <tariqt@nvidia.com> Link: https://lore.kernel.org/r/20201210194044.580936243@linutronix.de