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Read and write io memory should address align on ARCH ARM. Change to use memcpy_toio to avoid kernel panic caused by the address un-align issue. Signed-off-by: Sherry Sun <sherry.sun@nxp.com> Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com> Link: https://lore.kernel.org/r/20200929091106.24624-5-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>