diff options
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 39 |
1 files changed, 32 insertions, 7 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 8d05accf706c..18cc625d887f 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -245,15 +245,27 @@ 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; + + acpi_dev_pm_attach(&spi->dev, true); + ret = sdrv->probe(spi); + if (ret) + acpi_dev_pm_detach(&spi->dev, true); - return sdrv->probe(to_spi_device(dev)); + return ret; } static int spi_drv_remove(struct device *dev) { const struct spi_driver *sdrv = to_spi_driver(dev->driver); + struct spi_device *spi = to_spi_device(dev); + int ret; - return sdrv->remove(to_spi_device(dev)); + ret = sdrv->remove(spi); + acpi_dev_pm_detach(&spi->dev, true); + + return ret; } static void spi_drv_shutdown(struct device *dev) @@ -345,6 +357,19 @@ struct spi_device *spi_alloc_device(struct spi_master *master) } EXPORT_SYMBOL_GPL(spi_alloc_device); +static void spi_dev_set_name(struct spi_device *spi) +{ + struct acpi_device *adev = ACPI_COMPANION(&spi->dev); + + if (adev) { + dev_set_name(&spi->dev, "spi-%s", acpi_dev_name(adev)); + return; + } + + dev_set_name(&spi->dev, "%s.%u", dev_name(&spi->master->dev), + spi->chip_select); +} + /** * spi_add_device - Add spi_device allocated with spi_alloc_device * @spi: spi_device to register @@ -371,9 +396,7 @@ int spi_add_device(struct spi_device *spi) } /* Set the bus ID string */ - dev_set_name(&spi->dev, "%s.%u", dev_name(&spi->master->dev), - spi->chip_select); - + spi_dev_set_name(spi); /* We need to make sure there's no other device with this * chipselect **BEFORE** we call setup(), else we'll trash @@ -559,7 +582,7 @@ static int spi_transfer_one_message(struct spi_master *master, list_for_each_entry(xfer, &msg->transfers, transfer_list) { trace_spi_transfer_start(msg, xfer); - INIT_COMPLETION(master->xfer_completion); + reinit_completion(&master->xfer_completion); ret = master->transfer_one(master, msg->spi, xfer); if (ret < 0) { @@ -1132,7 +1155,7 @@ static acpi_status acpi_spi_add_device(acpi_handle handle, u32 level, return AE_NO_MEMORY; } - ACPI_HANDLE_SET(&spi->dev, handle); + ACPI_COMPANION_SET(&spi->dev, adev); spi->irq = -1; INIT_LIST_HEAD(&resource_list); @@ -1145,8 +1168,10 @@ static acpi_status acpi_spi_add_device(acpi_handle handle, u32 level, return AE_OK; } + adev->power.flags.ignore_parent = true; strlcpy(spi->modalias, acpi_device_hid(adev), sizeof(spi->modalias)); if (spi_add_device(spi)) { + adev->power.flags.ignore_parent = false; dev_err(&master->dev, "failed to add SPI device %s from ACPI\n", dev_name(&adev->dev)); spi_dev_put(spi); |