spi: bcm-qspi: fix MSPI only access with bcm_qspi_exec_mem_op()

[ Upstream commit 2c7d1b281286c46049cd22b43435cecba560edde ]

This fixes case where MSPI controller is used to access spi-nor
flash and BSPI block is not present.

Fixes: 5f195ee7d830 ("spi: bcm-qspi: Implement the spi_mem interface")
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220328142442.7553-1-kdasu.kdev@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/spi/spi-bcm-qspi.c b/drivers/spi/spi-bcm-qspi.c
index ae8c86be778691267abc35caacd431016054ab6f..bd7c7fc7396101dc0f63eac88e3ac70829ad82a2 100644 (file)
--- a/drivers/spi/spi-bcm-qspi.c
+++ b/drivers/spi/spi-bcm-qspi.c
@@ -1033,7 +1033,7 @@ static int bcm_qspi_exec_mem_op(struct spi_mem *mem,
        addr = op->addr.val;
        len = op->data.nbytes;
 
-       if (bcm_qspi_bspi_ver_three(qspi) == true) {
+       if (has_bspi(qspi) && bcm_qspi_bspi_ver_three(qspi) == true) {
                /*
                 * The address coming into this function is a raw flash offset.
                 * But for BSPI <= V3, we need to convert it to a remapped BSPI
@@ -1052,7 +1052,7 @@ static int bcm_qspi_exec_mem_op(struct spi_mem *mem,
            len < 4)
                mspi_read = true;
 
-       if (mspi_read)
+       if (!has_bspi(qspi) || mspi_read)
                return bcm_qspi_mspi_exec_mem_op(spi, op);
 
        ret = bcm_qspi_bspi_set_mode(qspi, op, 0);