Avoid a crash, as master->setup may be NULL (e.g. xilinx controller).
Even if master->setup is set, spi_setup does several compatibility/
sanity checks which should not be skipped (fixes problems with
displays/controllers needing emulation for bits_per_word = 9).
Signed-off-by: Stefan Brüns <stefan.bru...@rwth-aachen.de>
---
drivers/staging/fbtft/fb_watterott.c | 4 ++--
drivers/staging/fbtft/fbtft-core.c | 4 ++--
drivers/staging/fbtft/flexfb.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)
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 9cc8141..ba08da3 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -1434,12 +1434,12 @@ 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 2c4ce07..fecf486 100644
--- a/drivers/staging/fbtft/flexfb.c
+++ b/drivers/staging/fbtft/flexfb.c
@@ -440,12 +440,12 @@ 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 */
--
2.1.4
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