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20366e19e2
Modern NAND controller drivers implement ->exec_op() instead of ->cmdfunc(), make sure we don't end up with a NULL pointer dereference when hynix_nand_reg_write_op() is called. Fixes: 8878b126df76 ("mtd: nand: add ->exec_op() implementation") Cc: <stable@vger.kernel.org> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>