We currently have a complex clean_inputs() function while this can be
handled all by devres. Set a group that we can destroy in wireless_work().
Signed-off-by: Benjamin Tissoires <benjamin.tissoi...@redhat.com>
Acked-by: Ping Cheng <pi...@wacom.com>
Signed-off-by: Jiri Kosina <jkos...@suse.cz>
[aaron.sko...@wacom.com: Imported into input-wacom repository (84dfbd7)]
Signed-off-by: Aaron Armstrong Skomra <aaron.sko...@wacom.com>
[aaron.sko...@wacom.com: Backported from input-wacom repository (458c0ea)]
Signed-off-by: Aaron Armstrong Skomra <aaron.sko...@wacom.com>
---
3.17/wacom.h | 1 +
3.17/wacom_sys.c | 69 ++++++++++++++++++++++++--------------------------------
3.17/wacom_wac.c | 2 +-
3.17/wacom_wac.h | 3 ---
4 files changed, 32 insertions(+), 43 deletions(-)
diff --git a/3.17/wacom.h b/3.17/wacom.h
index fc1eeae..9f94378 100644
--- a/3.17/wacom.h
+++ b/3.17/wacom.h
@@ -150,6 +150,7 @@ struct wacom {
#endif
struct kobject *remote_dir;
struct attribute_group remote_group[5];
+ bool resources;
};
static inline void wacom_schedule_work(struct wacom_wac *wacom_wac,
diff --git a/3.17/wacom_sys.c b/3.17/wacom_sys.c
index e0ee405..a5c2f44 100644
--- a/3.17/wacom_sys.c
+++ b/3.17/wacom_sys.c
@@ -1434,34 +1434,6 @@ static struct input_dev *wacom_allocate_input(struct
wacom *wacom)
return input_dev;
}
-static void wacom_clean_inputs(struct wacom *wacom)
-{
- if (wacom->wacom_wac.pen_input) {
- if (wacom->wacom_wac.pen_registered)
- input_unregister_device(wacom->wacom_wac.pen_input);
- else
- input_free_device(wacom->wacom_wac.pen_input);
- }
- if (wacom->wacom_wac.touch_input) {
- if (wacom->wacom_wac.touch_registered)
- input_unregister_device(wacom->wacom_wac.touch_input);
- else
- input_free_device(wacom->wacom_wac.touch_input);
- }
- if (wacom->wacom_wac.pad_input) {
- if (wacom->wacom_wac.pad_registered)
- input_unregister_device(wacom->wacom_wac.pad_input);
- else
- input_free_device(wacom->wacom_wac.pad_input);
- }
- wacom->wacom_wac.pen_input = NULL;
- wacom->wacom_wac.touch_input = NULL;
- wacom->wacom_wac.pad_input = NULL;
- wacom->wacom_wac.pen_registered = false;
- wacom->wacom_wac.touch_registered = false;
- wacom->wacom_wac.pad_registered = false;
-}
-
static int wacom_allocate_inputs(struct wacom *wacom)
{
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
@@ -1504,7 +1476,6 @@ static int wacom_register_inputs(struct wacom *wacom)
error = input_register_device(pen_input_dev);
if (error)
goto fail;
- wacom_wac->pen_registered = true;
}
error = wacom_setup_touch_input_capabilities(touch_input_dev,
wacom_wac);
@@ -1517,7 +1488,6 @@ static int wacom_register_inputs(struct wacom *wacom)
error = input_register_device(touch_input_dev);
if (error)
goto fail;
- wacom_wac->touch_registered = true;
}
error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
@@ -1530,18 +1500,14 @@ static int wacom_register_inputs(struct wacom *wacom)
error = input_register_device(pad_input_dev);
if (error)
goto fail;
- wacom_wac->pad_registered = true;
}
return 0;
fail:
wacom_wac->pad_input = NULL;
- wacom_wac->pad_registered = false;
wacom_wac->touch_input = NULL;
- wacom_wac->touch_registered = false;
wacom_wac->pen_input = NULL;
- wacom_wac->pen_registered = false;
return error;
}
@@ -1656,6 +1622,22 @@ static void wacom_update_name(struct wacom *wacom, const
char *suffix)
"%s%s Pad", name, suffix);
}
+static void wacom_release_resources(struct wacom *wacom)
+{
+ struct hid_device *hdev = wacom->hdev;
+
+ if (!wacom->resources)
+ return;
+
+ devres_release_group(&hdev->dev, wacom);
+
+ wacom->resources = false;
+
+ wacom->wacom_wac.pen_input = NULL;
+ wacom->wacom_wac.touch_input = NULL;
+ wacom->wacom_wac.pad_input = NULL;
+}
+
static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
{
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
@@ -1668,9 +1650,14 @@ static int wacom_parse_and_register(struct wacom *wacom,
bool wireless)
if (features->pktlen > WACOM_PKGLEN_MAX)
return -EINVAL;
+ if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL))
+ return -ENOMEM;
+
+ wacom->resources = true;
+
error = wacom_allocate_inputs(wacom);
if (error)
- return error;
+ goto fail_open_group;
/*
* Bamboo Pad has a generic hid handling for the Pen, and we switch it
@@ -1781,6 +1768,8 @@ static int wacom_parse_and_register(struct wacom *wacom,
bool wireless)
wacom_wac->shared->touch_input = wacom_wac->touch_input;
}
+ devres_close_group(&hdev->dev, wacom);
+
return 0;
fail_quirks:
@@ -1799,6 +1788,8 @@ fail_battery:
fail_shared_data:
fail_parsed:
fail_allocate_inputs:
+fail_open_group:
+ wacom_release_resources(wacom);
return error;
}
@@ -1824,14 +1815,14 @@ static void wacom_wireless_work(struct work_struct
*work)
wacom1 = hid_get_drvdata(hdev1);
wacom_wac1 = &(wacom1->wacom_wac);
wacom_destroy_leds(wacom1);
- wacom_clean_inputs(wacom1);
+ wacom_release_resources(wacom1);
/* Touch interface */
hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
wacom2 = hid_get_drvdata(hdev2);
wacom_wac2 = &(wacom2->wacom_wac);
wacom_destroy_leds(wacom2);
- wacom_clean_inputs(wacom2);
+ wacom_release_resources(wacom2);
if (wacom_wac->pid == 0) {
hid_info(wacom->hdev, "wireless tablet disconnected\n");
@@ -1886,9 +1877,9 @@ static void wacom_wireless_work(struct work_struct *work)
fail:
wacom_destroy_leds(wacom1);
- wacom_clean_inputs(wacom1);
+ wacom_release_resources(wacom1);
wacom_destroy_leds(wacom2);
- wacom_clean_inputs(wacom2);
+ wacom_release_resources(wacom2);
return;
}
diff --git a/3.17/wacom_wac.c b/3.17/wacom_wac.c
index 648355d..af214a3 100644
--- a/3.17/wacom_wac.c
+++ b/3.17/wacom_wac.c
@@ -1947,7 +1947,7 @@ static int wacom_bpt3_touch(struct wacom_wac *wacom)
}
/* only update touch if we actually have a touchpad and touch data
changed */
- if (wacom->touch_registered && touch_changed) {
+ if (wacom->touch_input && touch_changed) {
input_mt_sync_frame(wacom->touch_input);
wacom->shared->touch_down =
wacom_wac_finger_count_touches(wacom);
}
diff --git a/3.17/wacom_wac.h b/3.17/wacom_wac.h
index 4e48ac6..feeb96d 100644
--- a/3.17/wacom_wac.h
+++ b/3.17/wacom_wac.h
@@ -234,9 +234,6 @@ struct wacom_wac {
struct input_dev *pen_input;
struct input_dev *touch_input;
struct input_dev *pad_input;
- bool pen_registered;
- bool touch_registered;
- bool pad_registered;
int pid;
int battery_capacity;
int num_contacts_left;
--
2.7.4
------------------------------------------------------------------------------
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