[RFC PATCH v2 4/8] libata-acpi: set acpi state for SATA port
From: Lin Ming <hidden>
Date: 2012-03-01 09:06:50
Also in:
linux-acpi, linux-scsi, lkml
Subsystem:
libata subsystem (serial and parallel ata drivers), the rest · Maintainers:
Damien Le Moal, Niklas Cassel, Linus Torvalds
Currently, ata_acpi_set_state() only sets acpi sate for IDE port. Remove this limitation. Signed-off-by: Lin Ming <redacted> --- drivers/ata/libata-acpi.c | 21 ++++++++++++--------- 1 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index b03e468..104c1d0 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c@@ -841,23 +841,26 @@ void ata_acpi_on_resume(struct ata_port *ap) void ata_acpi_set_state(struct ata_port *ap, pm_message_t state) { struct ata_device *dev; - - if (!ata_ap_acpi_handle(ap) || (ap->flags & ATA_FLAG_ACPI_SATA)) - return; + acpi_handle handle; + int acpi_state; /* channel first and then drives for power on and vica versa for power off */ - if (state.event == PM_EVENT_ON) - acpi_bus_set_power(ata_ap_acpi_handle(ap), ACPI_STATE_D0); + handle = ata_ap_acpi_handle(ap); + if (handle && state.event == PM_EVENT_ON) + acpi_bus_set_power(handle, ACPI_STATE_D0); ata_for_each_dev(dev, &ap->link, ENABLED) { - if (ata_dev_acpi_handle(dev)) - acpi_bus_set_power(ata_dev_acpi_handle(dev), + handle = ata_dev_acpi_handle(dev); + if (handle) + acpi_bus_set_power(handle, state.event == PM_EVENT_ON ? ACPI_STATE_D0 : ACPI_STATE_D3); } - if (state.event != PM_EVENT_ON) - acpi_bus_set_power(ata_ap_acpi_handle(ap), ACPI_STATE_D3); + + handle = ata_ap_acpi_handle(ap); + if (handle && state.event != PM_EVENT_ON) + acpi_bus_set_power(handle, ACPI_STATE_D3); } /**
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1.7.2.5