[PATCH 4/4] libata: acpi: respect may_power_off flag
From: Aaron Lu <hidden>
Date: 2012-08-30 06:42:03
Also in:
linux-acpi
Subsystem:
libata subsystem (serial and parallel ata drivers), the rest · Maintainers:
Damien Le Moal, Niklas Cassel, Linus Torvalds
If user does not want the device being powered off when runtime suspended by setting may_power_off flag to 0, we will not choose D3 cold ACPI D-State for it in sata_acpi_set_state. Signed-off-by: Aaron Lu <redacted> --- drivers/ata/libata-acpi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 67a696f..90c42a0 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c@@ -848,7 +848,9 @@ static void sata_acpi_set_state(struct ata_port *ap, pm_message_t state) if (state.event == PM_EVENT_AUTO_SUSPEND) { acpi_state = acpi_pm_device_sleep_state( - &dev->sdev->sdev_gendev, NULL, ACPI_STATE_D3); + &dev->sdev->sdev_gendev, NULL, + dev->sdev->may_power_off ? + ACPI_STATE_D3_COLD : ACPI_STATE_D3_HOT); if (acpi_state > 0) acpi_bus_set_power(handle, acpi_state); acpi_pm_device_run_wake(&dev->sdev->sdev_gendev, true);
--
1.7.11.5