From: Shaohua Li <shaohua.li@xxxxxxxxx>
serio shutdown is quite slow. It sometimes will take 0.2s for each port.
Signed-off-by: Shaohua Li <shaohua.li@xxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
Cc: Dmitry Torokhov <dtor@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/input/serio/serio.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff -puN drivers/input/serio/serio.c~serios-async-shutdown drivers/input/serio/serio.c
--- a/drivers/input/serio/serio.c~serios-async-shutdown
+++ a/drivers/input/serio/serio.c
@@ -36,6 +36,7 @@
#include <linux/kthread.h>
#include <linux/mutex.h>
#include <linux/freezer.h>
+#include <linux/async.h>
MODULE_AUTHOR("Vojtech Pavlik <vojtech@xxxxxx>");
MODULE_DESCRIPTION("Serio abstraction core");
@@ -792,11 +793,17 @@ static void serio_cleanup(struct serio *
mutex_unlock(&serio->drv_mutex);
}
+static void serio_async_shutdown(void *data, async_cookie_t cookie)
+{
+ struct serio *serio = data;
+ serio_cleanup(serio);
+}
+
static void serio_shutdown(struct device *dev)
{
struct serio *serio = to_serio_port(dev);
- serio_cleanup(serio);
+ async_schedule(serio_async_shutdown, serio);
}
static void serio_attach_driver(struct serio_driver *drv)
_
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