4.14-stable review patch. If anyone has any objections, please let me know.
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From: Liu Xiang liu.xiang6@zte.com.cn
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: e46ecda764dc ("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
--- drivers/mtd/spi-nor/fsl-quadspi.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -468,6 +468,7 @@ static int fsl_qspi_get_seqid(struct fsl { 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;