spi-altera.c is missing a bitbang setup_transfer callback to setup the clock and wordsize for the SPI transfer. This triggers a NULL pointer dereference in spi_bitbang_transfer_one. Provide the missing callback, which simply returns success, because the parameters are not configurable at runtime for this hardware.
Signed-off-by: Iain Baron <[email protected]> --- drivers/spi/spi-altera.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/spi/spi-altera.c b/drivers/spi/spi-altera.c index 595b62c..6b63f60 100644 --- a/drivers/spi/spi-altera.c +++ b/drivers/spi/spi-altera.c @@ -198,6 +198,12 @@ static irqreturn_t altera_spi_irq(int irq, void *dev) return IRQ_HANDLED; } +static int altera_spi_setup_transfer(struct spi_device *spi, + struct spi_transfer *t) +{ + return 0; +} + static int altera_spi_probe(struct platform_device *pdev) { struct altera_spi_platform_data *platp = dev_get_platdata(&pdev->dev); @@ -224,6 +230,7 @@ static int altera_spi_probe(struct platform_device *pdev) return err; hw->bitbang.chipselect = altera_spi_chipsel; hw->bitbang.txrx_bufs = altera_spi_txrx; + hw->bitbang.setup_transfer = altera_spi_setup_transfer; /* find and map our resources */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
