pnp: change pnp bus pm_ops to invoke pnp driver dev_pm_ops if specified

pnp_bus_suspend() and pnp_bus_resume() invoke legacy pm_ops from
pnp_driver.  Changed pnp_bus_suspend() and pnp_bus_resume() to check if
pnp driver has dev_pm_ops and call.  If dev_pm_ops don't exist, then call
use legacy pm_ops.  Without this change, pnp_driver dev_pm_ops will not
get called.

In addition to the pnp driver bus pm_ops change to invoke driver
dev_pm_ops, this patch set contains changes to rtc-cmos, tpm_tis, and
apple-gmux pnp drivers to convert from legacy pm_ops to dev_pm_ops.

This patch (of 4):

pnp_bus_suspend() and pnp_bus_resume() invoke legacy pm_ops from
pnp_driver.  Changed pnp_bus_suspend() and pnp_bus_resume() to check if
pnp driver has dev_pm_ops and call.  If dev_pm_ops don't exist, then call
use legacy pm_ops.  Without this change, pnp_driver dev_pm_ops will not
get called.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Cc: Leonidas Da Silva Barbosa <leosilva@linux.vnet.ibm.com>
Cc: Ashley Lai <ashley@ashleylai.com>
Cc: Rajiv Andrade <mail@srajiv.net>
Cc: Marcel Selhorst <tpmdd@selhorst.net>
Cc: Sirrix AG <tpmdd@sirrix.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Peter Hüwe <PeterHuewe@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index 12adb43a0693..a39ee38a9414 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c
@@ -163,6 +163,13 @@ static int __pnp_bus_suspend(struct device *dev, pm_message_t state)
         if (!pnp_drv)
                 return 0;
 
+        if (pnp_drv->driver.pm && pnp_drv->driver.pm->suspend) {
+                error = pnp_drv->driver.pm->suspend(dev);
+                suspend_report_result(pnp_drv->driver.pm->suspend, error);
+                if (error)
+                        return error;
+        }
+
         if (pnp_drv->suspend) {
                 error = pnp_drv->suspend(pnp_dev, state);
                 if (error)
@@ -211,6 +218,12 @@ static int pnp_bus_resume(struct device *dev)
                         return error;
         }
 
+        if (pnp_drv->driver.pm && pnp_drv->driver.pm->resume) {
+                error = pnp_drv->driver.pm->resume(dev);
+                if (error)
+                        return error;
+        }
+
         if (pnp_drv->resume) {
                 error = pnp_drv->resume(pnp_dev);
                 if (error)