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-rw-r--r--drivers/input/serio/ams_delta_serio.c6
-rw-r--r--drivers/input/serio/serio.c5
-rw-r--r--include/linux/serio.h5
3 files changed, 4 insertions, 12 deletions
diff --git a/drivers/input/serio/ams_delta_serio.c b/drivers/input/serio/ams_delta_serio.c
index a1c314897951..1c0be299f179 100644
--- a/drivers/input/serio/ams_delta_serio.c
+++ b/drivers/input/serio/ams_delta_serio.c
@@ -89,11 +89,6 @@ static irqreturn_t ams_delta_serio_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static int ams_delta_serio_write(struct serio *serio, u8 data)
-{
- return -EINVAL;
-}
-
static int ams_delta_serio_open(struct serio *serio)
{
struct ams_delta_serio *priv = serio->port_data;
@@ -162,7 +157,6 @@ static int ams_delta_serio_init(struct platform_device *pdev)
priv->serio = serio;
serio->id.type = SERIO_8042;
- serio->write = ams_delta_serio_write;
serio->open = ams_delta_serio_open;
serio->close = ams_delta_serio_close;
strlcpy(serio->name, "AMS DELTA keyboard adapter", sizeof(serio->name));
diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
index 8d229a11bb6b..29f491082926 100644
--- a/drivers/input/serio/serio.c
+++ b/drivers/input/serio/serio.c
@@ -694,11 +694,6 @@ EXPORT_SYMBOL(serio_reconnect);
*/
void __serio_register_port(struct serio *serio, struct module *owner)
{
- if (!serio->write) {
- pr_err("%s: refusing to register %s without write method\n",
- __func__, serio->name);
- return;
- }
serio_init_port(serio);
serio_queue_event(serio, owner, SERIO_REGISTER_PORT);
}
diff --git a/include/linux/serio.h b/include/linux/serio.h
index 075f1b8d76fa..6c27d413da92 100644
--- a/include/linux/serio.h
+++ b/include/linux/serio.h
@@ -121,7 +121,10 @@ void serio_unregister_driver(struct serio_driver *drv);
static inline int serio_write(struct serio *serio, unsigned char data)
{
- return serio->write(serio, data);
+ if (serio->write)
+ return serio->write(serio, data);
+ else
+ return -1;
}
static inline void serio_drv_write_wakeup(struct serio *serio)