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In the imx6, all the ready/busy pins are binding togeter. So we should always check the ready/busy pin of the chip 0. In the other word, when the CS1 is enabled, we should also check the ready/busy of chip 0; if we check the ready/busy of chip 1, we will get the wrong result. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>