spi: fsl_qspi: Ensure width is respected in spi-mem operations

Adapted from kernel commit b0177aca7aea
From: Michael Walle <michael@walle.cc>

Make use of a core helper to ensure the desired width is respected
when calling spi-mem operators.

Otherwise only the SPI controller will be matched with the flash chip,
which might lead to wrong widths. Also consider the width specified by
the user in the device tree.

Fixes: 91afd36f38 ("spi: Add a driver for the Freescale/NXP QuadSPI controller")
Signed-off-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20200114154613.8195-1-michael@walle.cc
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Mathew McBride <matt@traverse.com.au> [adapt for U-Boot]
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/drivers/spi/fsl_qspi.c b/drivers/spi/fsl_qspi.c
index 8bc7038a82ad1345b0eaa1cc592c522137b599d0..2a1f3a0c44fd12e770f7a2c79e9c84d58e22b578 100644 (file)
--- a/drivers/spi/fsl_qspi.c
+++ b/drivers/spi/fsl_qspi.c
@@ -409,7 +409,7 @@ static bool fsl_qspi_supports_op(struct spi_slave *slave,
            op->data.nbytes > q->devtype_data->txfifo)
                return false;
 
-       return true;
+       return spi_mem_default_supports_op(slave, op);
 }
 
 static void fsl_qspi_prepare_lut(struct fsl_qspi *q,