Calling the setup of the SPI master directly causes a NULL pointer dereference with master drivers without a separate setup function. This problem is reproduceable on ARM MXS platform.
So fix this issue by using spi_setup() instead. Signed-off-by: Stefan Wahren <stefan.wah...@i2se.com> --- drivers/staging/fbtft/fb_uc1611.c | 2 +- drivers/staging/fbtft/fb_watterott.c | 4 ++-- drivers/staging/fbtft/fbtft-core.c | 4 ++-- drivers/staging/fbtft/flexfb.c | 4 ++-- 4 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/staging/fbtft/fb_uc1611.c b/drivers/staging/fbtft/fb_uc1611.c index 32f3a9d..5cafa50 100644 --- a/drivers/staging/fbtft/fb_uc1611.c +++ b/drivers/staging/fbtft/fb_uc1611.c @@ -76,7 +76,7 @@ static int init_display(struct fbtft_par *par) /* Set CS active high */ par->spi->mode |= SPI_CS_HIGH; - ret = par->spi->master->setup(par->spi); + ret = spi_setup(par->spi); if (ret) { dev_err(par->info->device, "Could not set SPI_CS_HIGH\n"); return ret; diff --git a/drivers/staging/fbtft/fb_watterott.c b/drivers/staging/fbtft/fb_watterott.c index 88fb2c0..8eae6ef 100644 --- a/drivers/staging/fbtft/fb_watterott.c +++ b/drivers/staging/fbtft/fb_watterott.c @@ -169,7 +169,7 @@ static int init_display(struct fbtft_par *par) /* enable SPI interface by having CS and MOSI low during reset */ save_mode = par->spi->mode; par->spi->mode |= SPI_CS_HIGH; - ret = par->spi->master->setup(par->spi); /* set CS inactive low */ + ret = spi_setup(par->spi); /* set CS inactive low */ if (ret) { dev_err(par->info->device, "Could not set SPI_CS_HIGH\n"); return ret; @@ -180,7 +180,7 @@ static int init_display(struct fbtft_par *par) par->fbtftops.reset(par); mdelay(1000); par->spi->mode = save_mode; - ret = par->spi->master->setup(par->spi); + ret = spi_setup(par->spi); if (ret) { dev_err(par->info->device, "Could not restore SPI mode\n"); return ret; diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c index 23392eb..3638554 100644 --- a/drivers/staging/fbtft/fbtft-core.c +++ b/drivers/staging/fbtft/fbtft-core.c @@ -1437,12 +1437,12 @@ int fbtft_probe_common(struct fbtft_display *display, /* 9-bit SPI setup */ if (par->spi && display->buswidth == 9) { par->spi->bits_per_word = 9; - ret = par->spi->master->setup(par->spi); + ret = spi_setup(par->spi); if (ret) { dev_warn(&par->spi->dev, "9-bit SPI not available, emulating using 8-bit.\n"); par->spi->bits_per_word = 8; - ret = par->spi->master->setup(par->spi); + ret = spi_setup(par->spi); if (ret) goto out_release; /* allocate buffer with room for dc bits */ diff --git a/drivers/staging/fbtft/flexfb.c b/drivers/staging/fbtft/flexfb.c index c763efc..09fd15d 100644 --- a/drivers/staging/fbtft/flexfb.c +++ b/drivers/staging/fbtft/flexfb.c @@ -464,12 +464,12 @@ static int flexfb_probe_common(struct spi_device *sdev, par->fbtftops.write_register = fbtft_write_reg8_bus9; par->fbtftops.write_vmem = fbtft_write_vmem16_bus9; sdev->bits_per_word = 9; - ret = sdev->master->setup(sdev); + ret = spi_setup(sdev); if (ret) { dev_warn(dev, "9-bit SPI not available, emulating using 8-bit.\n"); sdev->bits_per_word = 8; - ret = sdev->master->setup(sdev); + ret = spi_setup(sdev); if (ret) goto out_release; /* allocate buffer with room for dc bits */ -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/