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| author | Lin Ming <ming.m.lin@intel.com> | 2011-12-05 09:20:28 +0800 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2012-01-08 19:14:58 -0500 |
| commit | 9ee4f3933930abf5cc34f8e9d69fe0e08c18f602 (patch) | |
| tree | 7d3751d52712f71a19d488f9970b6184b4c140c6 /drivers/ata | |
| parent | 5ef41082912bdfcb33fa53b8dba2ad17dea2ef90 (diff) | |
| download | linux-9ee4f3933930abf5cc34f8e9d69fe0e08c18f602.tar.bz2 | |
ata: add ata port runtime PM callbacks
Add ata port runtime suspend/resume/idle callbacks.
Set ->eh_noresume to skip the runtime PM calls on scsi host
in the error handler to avoid dead lock.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-core.c | 10 | ||||
| -rw-r--r-- | drivers/ata/libata-scsi.c | 1 | ||||
| -rw-r--r-- | drivers/ata/libata-transport.c | 4 |
3 files changed, 15 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 04c208e3cec6..15a3d4deb272 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -66,6 +66,7 @@ #include <asm/byteorder.h> #include <linux/cdrom.h> #include <linux/ratelimit.h> +#include <linux/pm_runtime.h> #include "libata.h" #include "libata-transport.h" @@ -5307,9 +5308,18 @@ static int ata_port_resume(struct device *dev) return rc; } +static int ata_port_runtime_idle(struct device *dev) +{ + return pm_runtime_suspend(dev); +} + static const struct dev_pm_ops ata_port_pm_ops = { .suspend = ata_port_suspend, .resume = ata_port_resume, + + .runtime_suspend = ata_port_suspend_common, + .runtime_resume = ata_port_resume, + .runtime_idle = ata_port_runtime_idle, }; /** diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 7ae1e771d950..508a60bfe5c1 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -3381,6 +3381,7 @@ int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) if (!shost) goto err_alloc; + shost->eh_noresume = 1; *(struct ata_port **)&shost->hostdata[0] = ap; ap->scsi_host = shost; diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c index 3ceb3d94be26..9a7f0ea565df 100644 --- a/drivers/ata/libata-transport.c +++ b/drivers/ata/libata-transport.c @@ -32,6 +32,7 @@ #include <linux/libata.h> #include <linux/hdreg.h> #include <linux/uaccess.h> +#include <linux/pm_runtime.h> #include "libata.h" #include "libata-transport.h" @@ -290,6 +291,9 @@ int ata_tport_add(struct device *parent, goto tport_err; } + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + transport_add_device(dev); transport_configure_device(dev); |