Commit e40d8067 authored Aug 28, 2018 by Liu Xiang Committed by Greg Kroah-Hartman Nov 13, 2018

mtd: spi-nor: fsl-quadspi: fix read error for flash size larger than 16MB



commit 41fe242979e463d6ad251077ded01b825a330b7e upstream.

If the size of spi-nor flash is larger than 16MB, the read_opcode
is set to SPINOR_OP_READ_1_1_4_4B, and fsl_qspi_get_seqid() will
return -EINVAL when cmd is SPINOR_OP_READ_1_1_4_4B. This can
cause read operation fail.

Fixes: e46ecda7 ("mtd: spi-nor: Add Freescale QuadSPI driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Liu Xiang <liu.xiang6@zte.com.cn>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 53772af0

drivers/mtd/spi-nor/fsl-quadspi.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -478,6 +478,7 @@ static int fsl_qspi_get_seqid(struct fsl_qspi *q, u8 cmd)
		{
		switch (cmd) {
		case SPINOR_OP_READ_1_1_4:
		case SPINOR_OP_READ_1_1_4_4B:
		return SEQID_READ;
		case SPINOR_OP_WREN:
		return SEQID_WREN;