The commit 1a7b7ee72c21 (spi: Ensure that CS line is in non-active state after spi_setup()) introduces an unconditional call of spi_set_cs() before ->setup(). The dw_spi_set_cs() relies on that fact that ->setup() is already called, but it doesn't now. This patch fixes the crash by adding an additional check to dw_spi_set_cs().
Signed-off-by: Andy Shevchenko <[email protected]> --- drivers/spi/spi-dw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index cafac22..8d67d03 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -144,7 +144,7 @@ static void dw_spi_set_cs(struct spi_device *spi, bool enable) struct chip_data *chip = spi_get_ctldata(spi); /* Chip select logic is inverted from spi_set_cs() */ - if (chip->cs_control) + if (chip && chip->cs_control) chip->cs_control(!enable); if (!enable) -- 2.1.4 -- 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
