mtd: spi-nor: core: correct the op.dummy.nbytes when check read operations

[ Upstream commit 756564a ]

When check read operation, need to setting the op.dummy.nbytes based
on current read operation rather than the nor->read_proto.

Fixes: 0e30f47 ("mtd: spi-nor: add support for DTR protocol")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: BoughChen

drivers/mtd/spi-nor/core.c

@@ -2393,7 +2393,7 @@ static int spi_nor_spimem_check_readop(struct spi_nor *nor,
 	/* convert the dummy cycles to the number of bytes */
 	op.dummy.nbytes = (read->num_mode_clocks + read->num_wait_states) *
 			  op.dummy.buswidth / 8;
-	if (spi_nor_protocol_is_dtr(nor->read_proto))
+	if (spi_nor_protocol_is_dtr(read->proto))
 		op.dummy.nbytes *= 2;
 
 	return spi_nor_spimem_check_op(nor, &op);