[PATCH v10 09/10] libata: use PM_QOS_FLAG_NO_POLL to avoid events checking for ZPODD
From: Aaron Lu <hidden>
Date: 2012-11-21 11:50:46
Also in:
linux-acpi
Subsystem:
libata subsystem (serial and parallel ata drivers), the rest · Maintainers:
Damien Le Moal, Niklas Cassel, Linus Torvalds
When ODD is powered off, there is no need to do events checking, so set the PM_QOS_FLAG_NO_POLL flag. And the flag is cleared on power on. Signed-off-by: Aaron Lu <redacted> --- drivers/ata/libata-acpi.c | 3 ++- drivers/ata/libata-zpodd.c | 3 +++ 2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 27a84de..61a90de 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c@@ -840,7 +840,8 @@ static int ata_acpi_choose_state(struct ata_device *dev) if (zpodd_dev_enabled(dev)) { if (zpodd_poweroff_ready(dev)) - dev_pm_qos_update_request(&dev->pm_qos_req, 0); + dev_pm_qos_update_request(&dev->pm_qos_req, + PM_QOS_FLAG_NO_POLL); else dev_pm_qos_update_request(&dev->pm_qos_req, PM_QOS_FLAG_NO_POWER_OFF);
diff --git a/drivers/ata/libata-zpodd.c b/drivers/ata/libata-zpodd.c
index d4dbe42..a37833f 100644
--- a/drivers/ata/libata-zpodd.c
+++ b/drivers/ata/libata-zpodd.c@@ -2,6 +2,7 @@ #include <linux/cdrom.h> #include <linux/pm_runtime.h> #include <scsi/scsi_device.h> +#include <linux/pm_qos.h> #include "libata.h"
@@ -215,6 +216,8 @@ void zpodd_post_resume(struct ata_device *dev) zpodd->last_ready = 0; zpodd->zp_ready = false; + + dev_pm_qos_update_request(&dev->pm_qos_req, 0); } static void zpodd_wake_dev(acpi_handle handle, u32 event, void *context)
--
1.7.12.4