From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
To: Jiri Kosina <jikos@kernel.org>, Ping Cheng <pinglinux@gmail.com>,
Jason Gerecke <killertofu@gmail.com>,
Aaron Skomra <skomra@gmail.com>,
Peter Hutterer <peter.hutterer@who-t.net>
Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org
Subject: [PATCH v2 17/30] HID: wacom: EKR: have proper allocator and destructor
Date: Wed, 13 Jul 2016 18:06:04 +0200 [thread overview]
Message-ID: <1468425977-4819-18-git-send-email-benjamin.tissoires@redhat.com> (raw)
In-Reply-To: <1468425977-4819-1-git-send-email-benjamin.tissoires@redhat.com>
The wacom_remote_create_attr_group() and wacom_remote_destroy_attr_group()
functions were both allocating/destroying the sysfs groups but also
initializing the parameters for the remotes. Have proper functions
that can be called and extended.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
---
No changes in v2
---
drivers/hid/wacom_sys.c | 93 ++++++++++++++++++++++++++++---------------------
1 file changed, 53 insertions(+), 40 deletions(-)
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 241acee..27ca147 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -1300,8 +1300,6 @@ static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial,
int error = 0;
struct wacom_remote *remote = wacom->remote;
- remote->serial[index] = serial;
-
remote->remote_group[index].name = devm_kasprintf(&wacom->hdev->dev,
GFP_KERNEL,
"%d", serial);
@@ -1319,27 +1317,13 @@ static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial,
return 0;
}
-static void wacom_remote_destroy_attr_group(struct wacom *wacom, __u32 serial)
+static void wacom_remote_destroy_attr_group(struct wacom *wacom, unsigned int i)
{
struct wacom_remote *remote = wacom->remote;
- int i;
- if (!serial)
- return;
-
- for (i = 0; i < WACOM_MAX_REMOTES; i++) {
- if (remote->serial[i] == serial) {
- remote->serial[i] = 0;
- wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
- if (remote->remote_group[i].name) {
- sysfs_remove_group(remote->remote_dir,
- &remote->remote_group[i]);
- devm_kfree(&wacom->hdev->dev,
- (char *)remote->remote_group[i].name);
- remote->remote_group[i].name = NULL;
- }
- }
- }
+ sysfs_remove_group(remote->remote_dir, &remote->remote_group[i]);
+ devm_kfree(&wacom->hdev->dev, (char *)remote->remote_group[i].name);
+ remote->remote_group[i].name = NULL;
}
static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
@@ -1916,6 +1900,50 @@ fail:
return;
}
+static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)
+{
+ struct wacom_remote *remote = wacom->remote;
+ u32 serial = remote->serial[index];
+ int i;
+
+ wacom_remote_destroy_attr_group(wacom, index);
+
+ for (i = 0; i < WACOM_MAX_REMOTES; i++) {
+ if (remote->serial[i] == serial) {
+ remote->serial[i] = 0;
+ wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
+ }
+ }
+}
+
+static int wacom_remote_create_one(struct wacom *wacom, u32 serial,
+ unsigned int index)
+{
+ struct wacom_remote *remote = wacom->remote;
+ int error, k;
+
+ /* A remote can pair more than once with an EKR,
+ * check to make sure this serial isn't already paired.
+ */
+ for (k = 0; k < WACOM_MAX_REMOTES; k++) {
+ if (remote->serial[k] == serial)
+ break;
+ }
+
+ if (k < WACOM_MAX_REMOTES) {
+ remote->serial[index] = serial;
+ return 0;
+ }
+
+ error = wacom_remote_create_attr_group(wacom, serial, index);
+ if (error)
+ return error;
+
+ remote->serial[index] = serial;
+
+ return 0;
+}
+
static void wacom_remote_work(struct work_struct *work)
{
struct wacom *wacom = container_of(work, struct wacom, remote_work);
@@ -1924,7 +1952,7 @@ static void wacom_remote_work(struct work_struct *work)
unsigned long flags;
unsigned int count;
u32 serial;
- int i, k;
+ int i;
spin_lock_irqsave(&remote->remote_lock, flags);
@@ -1949,28 +1977,13 @@ static void wacom_remote_work(struct work_struct *work)
if (remote->serial[i] == serial)
continue;
- if (remote->serial[i]) {
- wacom_remote_destroy_attr_group(wacom,
- remote->serial[i]);
- }
-
- /* A remote can pair more than once with an EKR,
- * check to make sure this serial isn't already paired.
- */
- for (k = 0; k < WACOM_MAX_REMOTES; k++) {
- if (remote->serial[k] == serial)
- break;
- }
+ if (remote->serial[i])
+ wacom_remote_destroy_one(wacom, i);
- if (k < WACOM_MAX_REMOTES) {
- remote->serial[i] = serial;
- continue;
- }
- wacom_remote_create_attr_group(wacom, serial, i);
+ wacom_remote_create_one(wacom, serial, i);
} else if (remote->serial[i]) {
- wacom_remote_destroy_attr_group(wacom,
- remote->serial[i]);
+ wacom_remote_destroy_one(wacom, i);
}
}
}
--
2.5.5
next prev parent reply other threads:[~2016-07-13 16:07 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-13 16:05 [PATCH v2 00/30] HID: wacom: cleanup/EKR/LED Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 01/30] HID: wacom: actually report the battery level for wireless connected Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 02/30] HID: wacom: store the type in wacom->shared for INTUOSHT and INTUOSHT2 Benjamin Tissoires
2016-07-15 4:14 ` Ping Cheng
2016-07-18 14:54 ` Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 03/30] HID: wacom: remove cleanup of wacom->remote_dir from wacom_clean_inputs() Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 04/30] HID: wacom: untie leds from inputs Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 05/30] HID: wacom: use one work queue per task Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 06/30] HID: wacom: switch battery to devres Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 07/30] HID: wacom: switch inputs " Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 08/30] HID: wacom: put the managed resources in a group Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 09/30] HID: wacom: convert LEDs to devres Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 10/30] HID: wacom: use devm_kasprintf for allocating the name of the remote Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 11/30] HID: wacom: use devres to allocate driver data Benjamin Tissoires
2016-07-13 16:05 ` [PATCH v2 12/30] HID: wacom: devres manage the shared data too Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 13/30] HID: wacom: leds: dynamically allocate LED groups Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 14/30] HID: wacom: EKR: add a worker to add/remove resources on addition/removal Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 15/30] HID: wacom: EKR: have the wacom resources dynamically allocated Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 16/30] HID: wacom: rework fail path in probe() and parse_and_register() Benjamin Tissoires
2016-07-13 16:06 ` Benjamin Tissoires [this message]
2016-07-13 16:06 ` [PATCH v2 18/30] HID: wacom: EKR: use devres groups to manage resources Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 19/30] HID: wacom: EKR: have one array of struct remotes instead of many arrays Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 20/30] HID: wacom: EKR: allocate one input node per remote Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 21/30] HID: wacom: EKR: have one power_supply " Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 22/30] HID: wacom: EKR: attach the power_supply on first connection Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 23/30] HID: wacom: leds: use the ledclass instead of custom made sysfs files Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 24/30] HID: wacom: leds: actually release the LEDs on disconnect Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 25/30] HID: wacom: leds: handle the switch of the LEDs directly in the kernel Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 26/30] HID: wacom: leds: make sure Cintiq 21UX2 and 24HD control the right LEDs Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 27/30] HID: wacom: leds: handle Cintiq 24HD leds buttons Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 28/30] HID: wacom: power_supply: mark the type as USB Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 29/30] HID: wacom: power_supply: remove ac information Benjamin Tissoires
2016-07-13 16:06 ` [PATCH v2 30/30] HID: wacom: power_supply: provide the actual model_name Benjamin Tissoires
2016-07-13 21:36 ` [PATCH v2 00/30] HID: wacom: cleanup/EKR/LED Aaron Armstrong Skomra
2016-08-01 23:17 ` Ping Cheng
2016-08-02 8:48 ` Jiri Kosina
2016-08-05 11:41 ` Jiri Kosina
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