Samuel Holland c775a52461 genirq: Add and use an irq_data_update_affinity helper ... [ Upstream commit 073352e951 ] Some architectures and irqchip drivers modify the cpumask returned by irq_data_get_affinity_mask, usually by copying in to it. This is problematic for uniprocessor configurations, where the affinity mask should be constant, as it is known at compile time. Add and use a setter for the affinity mask, following the pattern of irq_data_update_effective_affinity. This allows the getter function to return a const cpumask pointer. Signed-off-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Xen bits Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220701200056.46555-7-samuel@sholland.org Stable-dep-of: feabecaff5 ("genirq/ipi: Fix NULL pointer deref in irq_data_get_affinity_mask()") Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-03-11 13:57:31 +01:00
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intc	genirq: Add and use an irq_data_update_affinity helper	2023-03-11 13:57:31 +01:00
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