[RFC PATCH 5/5] driver core: implement asynchorous probe() inside driver_register

2012-09-08 Thread Ming Lei 

Signed-off-by: Ming Lei 
---
 drivers/base/driver.c |   16 ++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 9365076..67fb63c 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -15,6 +15,7 @@
 #include 
 #include 
 #include 
+#include 
 #include "base.h"
 
 static struct device *next_device(struct klist_iter *i)
@@ -153,6 +154,13 @@ static void driver_remove_groups(struct device_driver *drv,
sysfs_remove_group(>p->kobj, groups[i]);
 }
 
+static void async_driver_attach(void *data, async_cookie_t cookie)
+{
+   struct device_driver *drv = data;
+
+   driver_attach(drv);
+}
+
 /**
  * driver_register - register driver with bus
  * @drv: driver to register
@@ -193,8 +201,12 @@ int __driver_register(struct device_driver *drv, int sync)
kobject_uevent(>p->kobj, KOBJ_ADD);
 
/* driver probe at the last minute */
-   if (drv->bus->p->drivers_autoprobe)
-   ret = driver_attach(drv);
+   if (drv->bus->p->drivers_autoprobe) {
+   if (sync)
+   ret = driver_attach(drv);
+   else
+   async_schedule(async_driver_attach, drv);
+   }
 
return ret;
 }
-- 
1.7.9.5

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[RFC PATCH 5/5] driver core: implement asynchorous probe() inside driver_register

2012-09-08 Thread Ming Lei 

Signed-off-by: Ming Lei ming@canonical.com
---
 drivers/base/driver.c |   16 ++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 9365076..67fb63c 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -15,6 +15,7 @@
 #include linux/errno.h
 #include linux/slab.h
 #include linux/string.h
+#include linux/async.h
 #include base.h
 
 static struct device *next_device(struct klist_iter *i)
@@ -153,6 +154,13 @@ static void driver_remove_groups(struct device_driver *drv,
sysfs_remove_group(drv-p-kobj, groups[i]);
 }
 
+static void async_driver_attach(void *data, async_cookie_t cookie)
+{
+   struct device_driver *drv = data;
+
+   driver_attach(drv);
+}
+
 /**
  * driver_register - register driver with bus
  * @drv: driver to register
@@ -193,8 +201,12 @@ int __driver_register(struct device_driver *drv, int sync)
kobject_uevent(drv-p-kobj, KOBJ_ADD);
 
/* driver probe at the last minute */
-   if (drv-bus-p-drivers_autoprobe)
-   ret = driver_attach(drv);
+   if (drv-bus-p-drivers_autoprobe) {
+   if (sync)
+   ret = driver_attach(drv);
+   else
+   async_schedule(async_driver_attach, drv);
+   }
 
return ret;
 }
-- 
1.7.9.5

--
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Please read the FAQ at  http://www.tux.org/lkml/