diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index bf989f6a80e0..6a306340dd25 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -270,15 +270,24 @@ EXPORT_SYMBOL_GPL(spi_bus_type); static int spi_drv_probe(struct device *dev) { const struct spi_driver *sdrv = to_spi_driver(dev->driver); + struct spi_device *spi = to_spi_device(dev); int ret; ret = of_clk_set_defaults(dev->of_node, false); if (ret) return ret; + if (dev->of_node) { + spi->irq = of_irq_get(dev->of_node, 0); + if (spi->irq == -EPROBE_DEFER) + return -EPROBE_DEFER; + if (spi->irq < 0) + spi->irq = 0; + } + ret = dev_pm_domain_attach(dev, true); if (ret != -EPROBE_DEFER) { - ret = sdrv->probe(to_spi_device(dev)); + ret = sdrv->probe(spi); if (ret) dev_pm_domain_detach(dev, true); } @@ -597,7 +606,7 @@ static void spi_set_cs(struct spi_device *spi, bool enable) if (spi->mode & SPI_CS_HIGH) enable = !enable; - if (spi->cs_gpio >= 0) + if (gpio_is_valid(spi->cs_gpio)) gpio_set_value(spi->cs_gpio, !enable); else if (spi->master->set_cs) spi->master->set_cs(spi, !enable); @@ -1433,9 +1442,6 @@ of_register_spi_device(struct spi_master *master, struct device_node *nc) } spi->max_speed_hz = value; - /* IRQ */ - spi->irq = irq_of_parse_and_map(nc, 0); - /* Store a pointer to the node in the device structure */ of_node_get(nc); spi->dev.of_node = nc; @@ -1949,7 +1955,7 @@ static int __spi_validate_bits_per_word(struct spi_master *master, u8 bits_per_w int spi_setup(struct spi_device *spi) { unsigned bad_bits, ugly_bits; - int status = 0; + int status; /* check mode to prevent that DUAL and QUAD set at the same time */ @@ -1986,8 +1992,9 @@ int spi_setup(struct spi_device *spi) if (!spi->bits_per_word) spi->bits_per_word = 8; - if (__spi_validate_bits_per_word(spi->master, spi->bits_per_word)) - return -EINVAL; + status = __spi_validate_bits_per_word(spi->master, spi->bits_per_word); + if (status) + return status; if (!spi->max_speed_hz) spi->max_speed_hz = spi->master->max_speed_hz; |