From: "Daniel J. Ogorchock" <djogorchock@gmail.com>
To: linux-input@vger.kernel.org
Cc: thunderbird2k@gmail.com, blaws05@gmail.com,
benjamin.tissoires@redhat.com, jikos@kernel.org,
Roderick.Colenbrander@sony.com, svv@google.com,
s.jegen@gmail.com, carmueller@gmail.com,
"Daniel J. Ogorchock" <djogorchock@gmail.com>
Subject: [PATCH v11 08/11] HID: nintendo: reduce device removal subcommand errors
Date: Mon, 16 Mar 2020 22:29:25 -0500 [thread overview]
Message-ID: <20200317032928.546172-9-djogorchock@gmail.com> (raw)
In-Reply-To: <20200317032928.546172-1-djogorchock@gmail.com>
This patch fixes meaningless error output from trying to send
subcommands immediately after controller removal. It now disables
subcommands as soon as possible on removal.
Signed-off-by: Daniel J. Ogorchock <djogorchock@gmail.com>
---
drivers/hid/hid-nintendo.c | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c
index 8e26672661dc..abac0497b1cb 100644
--- a/drivers/hid/hid-nintendo.c
+++ b/drivers/hid/hid-nintendo.c
@@ -230,6 +230,7 @@ static const struct joycon_rumble_amp_data joycon_rumble_amplitudes[] = {
enum joycon_ctlr_state {
JOYCON_CTLR_STATE_INIT,
JOYCON_CTLR_STATE_READ,
+ JOYCON_CTLR_STATE_REMOVED,
};
struct joycon_stick_cal {
@@ -451,6 +452,14 @@ static int joycon_send_subcmd(struct joycon_ctlr *ctlr,
unsigned long flags;
spin_lock_irqsave(&ctlr->lock, flags);
+ /*
+ * If the controller has been removed, just return ENODEV so the LED
+ * subsystem doesn't print invalid errors on removal.
+ */
+ if (ctlr->ctlr_state == JOYCON_CTLR_STATE_REMOVED) {
+ spin_unlock_irqrestore(&ctlr->lock, flags);
+ return -ENODEV;
+ }
memcpy(subcmd->rumble_data, ctlr->rumble_data[ctlr->rumble_queue_tail],
JC_RUMBLE_DATA_SIZE);
spin_unlock_irqrestore(&ctlr->lock, flags);
@@ -800,10 +809,13 @@ static void joycon_rumble_worker(struct work_struct *work)
mutex_lock(&ctlr->output_mutex);
ret = joycon_enable_rumble(ctlr, true);
mutex_unlock(&ctlr->output_mutex);
- if (ret < 0)
- hid_warn(ctlr->hdev, "Failed to set rumble; e=%d", ret);
+ /* -ENODEV means the controller was just unplugged */
spin_lock_irqsave(&ctlr->lock, flags);
+ if (ret < 0 && ret != -ENODEV &&
+ ctlr->ctlr_state != JOYCON_CTLR_STATE_REMOVED)
+ hid_warn(ctlr->hdev, "Failed to set rumble; e=%d", ret);
+
ctlr->rumble_msecs = jiffies_to_msecs(jiffies);
if (ctlr->rumble_queue_tail != ctlr->rumble_queue_head) {
if (++ctlr->rumble_queue_tail >= JC_RUMBLE_QUEUE_SIZE)
@@ -1516,9 +1528,17 @@ static int nintendo_hid_probe(struct hid_device *hdev,
static void nintendo_hid_remove(struct hid_device *hdev)
{
struct joycon_ctlr *ctlr = hid_get_drvdata(hdev);
+ unsigned long flags;
hid_dbg(hdev, "remove\n");
+
+ /* Prevent further attempts at sending subcommands. */
+ spin_lock_irqsave(&ctlr->lock, flags);
+ ctlr->ctlr_state = JOYCON_CTLR_STATE_REMOVED;
+ spin_unlock_irqrestore(&ctlr->lock, flags);
+
destroy_workqueue(ctlr->rumble_queue);
+
hid_hw_close(hdev);
hid_hw_stop(hdev);
}
--
2.25.1
next prev parent reply other threads:[~2020-03-17 3:30 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-17 3:29 [PATCH v11 00/11] HID: nintendo Daniel J. Ogorchock
2020-03-17 3:29 ` [PATCH v11 01/11] HID: nintendo: add nintendo switch controller driver Daniel J. Ogorchock
2020-03-17 3:29 ` [PATCH v11 02/11] HID: nintendo: add player led support Daniel J. Ogorchock
2020-03-17 3:29 ` [PATCH v11 03/11] HID: nintendo: add power supply support Daniel J. Ogorchock
2020-03-17 3:29 ` [PATCH v11 04/11] HID: nintendo: add home led support Daniel J. Ogorchock
2020-03-17 3:29 ` [PATCH v11 05/11] HID: nintendo: add rumble support Daniel J. Ogorchock
2020-04-25 13:01 ` Bastien Nocera
2020-03-17 3:29 ` [PATCH v11 06/11] HID: nintendo: improve subcommand reliability Daniel J. Ogorchock
2020-03-17 3:29 ` [PATCH v11 07/11] HID: nintendo: send subcommands after receiving input report Daniel J. Ogorchock
2020-03-17 3:29 ` Daniel J. Ogorchock [this message]
2020-03-17 3:29 ` [PATCH v11 09/11] HID: nintendo: patch hw version for userspace HID mappings Daniel J. Ogorchock
2020-03-17 3:29 ` [PATCH v11 10/11] HID: nintendo: set controller uniq to MAC Daniel J. Ogorchock
2020-03-17 3:29 ` [PATCH v11 11/11] HID: nintendo: add support for charging grip Daniel J. Ogorchock
2020-04-01 16:27 ` [PATCH v11 00/11] HID: nintendo Benjamin Tissoires
2020-04-03 13:16 ` Jiri Kosina
2020-04-25 13:01 ` Bastien Nocera
2020-04-26 20:42 ` Roderick Colenbrander
2020-04-26 21:14 ` Bastien Nocera
2020-04-26 22:31 ` Roderick Colenbrander
2020-04-27 8:56 ` Bastien Nocera
2020-05-22 19:11 ` Daniel Ogorchock
2020-07-22 18:54 ` Pierre-Loup A. Griffais
2020-07-22 19:22 ` Daniel Ogorchock
2020-07-22 19:47 ` Bastien Nocera
2020-07-22 20:03 ` Daniel Ogorchock
2020-08-01 19:59 ` Colenbrander, Roderick
2020-08-04 5:59 ` Daniel Ogorchock
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