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538c06e396
With pch_pic device, its register is based on MMIO address space, different access size 1/2/4/8 is supported. And base address should be naturally aligned with its access size, here add alignment check in its register access emulation function. Cc: stable@vger.kernel.org Signed-off-by: Bibo Mao <maobibo@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>