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commit79e441ee47upstream. The DMA map functions can fail and should be tested for errors. Fixes:d8701fe890("mtd: rawnand: renesas: Add new NAND controller driver") Cc: stable@vger.kernel.org Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>