spi: bcm-qspi: Always read and set BSPI_MAST_N_BOOT_CTRL

commit 602805fb618b018b7a41fbb3f93c1992b078b1ae upstream.

Always confirm the BSPI_MAST_N_BOOT_CTRL bit when enabling
or disabling BSPI transfers.

Fixes: 4e3b2d236fe00 ("spi: bcm-qspi: Add BSPI spi-nor flash controller driver")
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/spi/spi-bcm-qspi.c b/drivers/spi/spi-bcm-qspi.c
index d26d431..ff01f86 100644 (file)
--- a/drivers/spi/spi-bcm-qspi.c
+++ b/drivers/spi/spi-bcm-qspi.c
@@ -490,7 +490,7 @@ static int bcm_qspi_bspi_set_mode(struct bcm_qspi *qspi,
 
 static void bcm_qspi_enable_bspi(struct bcm_qspi *qspi)
 {
-       if (!has_bspi(qspi) || (qspi->bspi_enabled))
+       if (!has_bspi(qspi))
                return;
 
        qspi->bspi_enabled = 1;
@@ -505,7 +505,7 @@ static void bcm_qspi_enable_bspi(struct bcm_qspi *qspi)
 
 static void bcm_qspi_disable_bspi(struct bcm_qspi *qspi)
 {
-       if (!has_bspi(qspi) || (!qspi->bspi_enabled))
+       if (!has_bspi(qspi))
                return;
 
        qspi->bspi_enabled = 0;