diff options
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 978dda2c5239..361cced68069 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -553,6 +553,10 @@ static void spi_pump_messages(struct kthread_work *work) master->unprepare_transfer_hardware(master)) dev_err(&master->dev, "failed to unprepare transfer hardware\n"); + if (master->auto_runtime_pm) { + pm_runtime_mark_last_busy(master->dev.parent); + pm_runtime_put_autosuspend(master->dev.parent); + } return; } @@ -572,11 +576,23 @@ static void spi_pump_messages(struct kthread_work *work) master->busy = true; spin_unlock_irqrestore(&master->queue_lock, flags); + if (!was_busy && master->auto_runtime_pm) { + ret = pm_runtime_get_sync(master->dev.parent); + if (ret < 0) { + dev_err(&master->dev, "Failed to power device: %d\n", + ret); + return; + } + } + if (!was_busy && master->prepare_transfer_hardware) { ret = master->prepare_transfer_hardware(master); if (ret) { dev_err(&master->dev, "failed to prepare transfer hardware\n"); + + if (master->auto_runtime_pm) + pm_runtime_put(master->dev.parent); return; } } |