4.9-stable review patch. If anyone has any objections, please let me know.
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From: Kamal Dasu kdasu.kdev@gmail.com
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
--- drivers/spi/spi-bcm-qspi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/spi/spi-bcm-qspi.c +++ b/drivers/spi/spi-bcm-qspi.c @@ -514,7 +514,7 @@ static int bcm_qspi_bspi_set_mode(struct
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; @@ -529,7 +529,7 @@ static void bcm_qspi_enable_bspi(struct
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;