diff options
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 36 |
1 files changed, 20 insertions, 16 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index c1dad30a4528..ff1add2ecb91 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -419,6 +419,16 @@ static int spi_probe(struct device *dev) if (dev->of_node) { spi->irq = of_irq_get(dev->of_node, 0); if (spi->irq == -EPROBE_DEFER) + return dev_err_probe(dev, -EPROBE_DEFER, "Failed to get irq\n"); + if (spi->irq < 0) + spi->irq = 0; + } + + if (has_acpi_companion(dev) && spi->irq < 0) { + struct acpi_device *adev = to_acpi_device_node(dev->fwnode); + + spi->irq = acpi_dev_gpio_irq_get(adev, 0); + if (spi->irq == -EPROBE_DEFER) return -EPROBE_DEFER; if (spi->irq < 0) spi->irq = 0; @@ -984,9 +994,6 @@ static void spi_res_free(void *res) { struct spi_res *sres = container_of(res, struct spi_res, data); - if (!res) - return; - WARN_ON(!list_empty(&sres->entry)); kfree(sres); } @@ -2454,7 +2461,7 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi, nc, rc); return rc; } - if ((of_property_read_bool(nc, "parallel-memories")) && + if ((of_property_present(nc, "parallel-memories")) && (!(ctlr->flags & SPI_CONTROLLER_MULTI_CS))) { dev_err(&ctlr->dev, "SPI controller doesn't support multi CS\n"); return -EINVAL; @@ -2869,9 +2876,6 @@ static acpi_status acpi_register_spi_device(struct spi_controller *ctlr, acpi_set_modalias(adev, acpi_device_hid(adev), spi->modalias, sizeof(spi->modalias)); - if (spi->irq < 0) - spi->irq = acpi_dev_gpio_irq_get(adev, 0); - acpi_device_set_enumerated(adev); adev->power.flags.ignore_parent = true; @@ -2926,7 +2930,7 @@ static void spi_controller_release(struct device *dev) kfree(ctlr); } -static struct class spi_master_class = { +static const struct class spi_master_class = { .name = "spi_master", .dev_release = spi_controller_release, .dev_groups = spi_master_groups, @@ -3016,7 +3020,7 @@ static const struct attribute_group *spi_slave_groups[] = { NULL, }; -static struct class spi_slave_class = { +static const struct class spi_slave_class = { .name = "spi_slave", .dev_release = spi_controller_release, .dev_groups = spi_slave_groups, @@ -3238,9 +3242,9 @@ static int spi_controller_id_alloc(struct spi_controller *ctlr, int start, int e } /** - * spi_register_controller - register SPI master or slave controller - * @ctlr: initialized master, originally from spi_alloc_master() or - * spi_alloc_slave() + * spi_register_controller - register SPI host or target controller + * @ctlr: initialized controller, originally from spi_alloc_host() or + * spi_alloc_target() * Context: can sleep * * SPI controllers connect to their drivers using some non-SPI bus, @@ -3390,11 +3394,11 @@ static void devm_spi_unregister(struct device *dev, void *res) } /** - * devm_spi_register_controller - register managed SPI master or slave + * devm_spi_register_controller - register managed SPI host or target * controller * @dev: device managing SPI controller - * @ctlr: initialized controller, originally from spi_alloc_master() or - * spi_alloc_slave() + * @ctlr: initialized controller, originally from spi_alloc_host() or + * spi_alloc_target() * Context: can sleep * * Register a SPI device as with spi_register_controller() which will @@ -3478,7 +3482,7 @@ void spi_unregister_controller(struct spi_controller *ctlr) /* * Release the last reference on the controller if its driver - * has not yet been converted to devm_spi_alloc_master/slave(). + * has not yet been converted to devm_spi_alloc_host/target(). */ if (!ctlr->devm_allocated) put_device(&ctlr->dev); |