From: Russell King rmk+kernel@armlinux.org.uk
[ Upstream commit b89fefda7d4e3a649129584d855be233c7465264 ]
spi-gpio is capable of dealing with active-high chip-selects. Unfortunately, commit 4b859db2c606 ("spi: spi-gpio: add SPI_3WIRE support") broke this by setting master->mode_bits, which overrides the setting in the spi-bitbang code. Fix this.
[Fixed a trivial conflict with SPI_3WIRE_HIZ support -- broonie]
Fixes: 4b859db2c606 ("spi: spi-gpio: add SPI_3WIRE support") Signed-off-by: Russell King rmk+kernel@armlinux.org.uk Signed-off-by: Mark Brown broonie@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi-gpio.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c index 088772ebef9bd..77838d8fd9bb6 100644 --- a/drivers/spi/spi-gpio.c +++ b/drivers/spi/spi-gpio.c @@ -410,7 +410,7 @@ static int spi_gpio_probe(struct platform_device *pdev) return status;
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); - master->mode_bits = SPI_3WIRE | SPI_CPHA | SPI_CPOL; + master->mode_bits = SPI_3WIRE | SPI_CPHA | SPI_CPOL | SPI_CS_HIGH; master->flags = master_flags; master->bus_num = pdev->id; /* The master needs to think there is a chipselect even if not connected */ @@ -437,7 +437,6 @@ static int spi_gpio_probe(struct platform_device *pdev) spi_gpio->bitbang.txrx_word[SPI_MODE_3] = spi_gpio_spec_txrx_word_mode3; } spi_gpio->bitbang.setup_transfer = spi_bitbang_setup_transfer; - spi_gpio->bitbang.flags = SPI_CS_HIGH;
status = spi_bitbang_start(&spi_gpio->bitbang); if (status)