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 v10 08/12] HID: nintendo: reduce device removal subcommand errors
Date: Sun, 29 Dec 2019 19:27:16 -0600 [thread overview]
Message-ID: <20191230012720.2368987-9-djogorchock@gmail.com> (raw)
In-Reply-To: <20191230012720.2368987-1-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 | 26 ++++++++++++++++++++++++--
1 file changed, 24 insertions(+), 2 deletions(-)
diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c
index 152d7eb9c27d..4653a0a10782 100644
--- a/drivers/hid/hid-nintendo.c
+++ b/drivers/hid/hid-nintendo.c
@@ -225,6 +225,7 @@ 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 {
@@ -391,10 +392,12 @@ static int joycon_hid_send_sync(struct joycon_ctlr *ctlr, u8 *data, size_t len,
ret = wait_event_timeout(ctlr->wait,
ctlr->received_input_report,
HZ / 4);
+ spin_lock_irqsave(&ctlr->lock, flags);
/* We will still proceed, even with a timeout here */
if (!ret)
hid_warn(ctlr->hdev,
"timeout waiting for input report\n");
+ spin_unlock_irqrestore(&ctlr->lock, flags);
}
ret = __joycon_hid_send(ctlr->hdev, data, len);
@@ -446,6 +449,14 @@ 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);
@@ -772,10 +783,13 @@ 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)
@@ -1465,9 +1479,17 @@ 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);
}
--
2.24.1
next prev parent reply other threads:[~2019-12-30 1:27 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-30 1:27 [PATCH v10 00/12] HID:nintendo Daniel J. Ogorchock
2019-12-30 1:27 ` [PATCH v10 01/12] HID: nintendo: add nintendo switch controller driver Daniel J. Ogorchock
2021-05-24 16:34 ` Lee Jones
2021-05-24 16:55 ` Barnabás Pőcze
2019-12-30 1:27 ` [PATCH v10 02/12] HID: nintendo: add player led support Daniel J. Ogorchock
2019-12-30 1:27 ` [PATCH v10 03/12] HID: nintendo: add power supply support Daniel J. Ogorchock
2019-12-30 1:27 ` [PATCH v10 04/12] HID: nintendo: add home led support Daniel J. Ogorchock
2019-12-30 1:27 ` [PATCH v10 05/12] HID: nintendo: add rumble support Daniel J. Ogorchock
2019-12-30 1:27 ` [PATCH v10 06/12] HID: nintendo: improve subcommand reliability Daniel J. Ogorchock
2019-12-30 1:27 ` [PATCH v10 07/12] HID: nintendo: send subcommands after receiving input report Daniel J. Ogorchock
2019-12-30 1:27 ` Daniel J. Ogorchock [this message]
2019-12-30 1:27 ` [PATCH v10 09/12] HID: nintendo: patch hw version for userspace HID mappings Daniel J. Ogorchock
2019-12-30 1:27 ` [PATCH v10 10/12] HID: nintendo: set controller uniq to MAC Daniel J. Ogorchock
2019-12-30 1:27 ` [PATCH v10 11/12] HID: nintendo: add IMU support Daniel J. Ogorchock
2019-12-31 6:29 ` Roderick Colenbrander
2020-01-09 3:26 ` Daniel Ogorchock
2020-01-09 5:22 ` Roderick Colenbrander
2020-01-09 6:23 ` Carl Mueller
2020-01-09 8:53 ` Daniel Ogorchock
2020-01-09 16:37 ` Roderick Colenbrander
2020-01-09 20:38 ` Carl Mueller
[not found] ` <CAKF84v26=X8OLPavdE52tprm=WOynUXRz2aDjz5Bvqw6rdTZQg@mail.gmail.com>
2020-01-18 3:49 ` Daniel Ogorchock
2020-01-21 18:19 ` Siarhei Vishniakou
2020-01-21 2:49 ` Daniel Ogorchock
2020-01-22 5:19 ` Roderick Colenbrander
2020-01-09 8:55 ` Daniel Ogorchock
2019-12-30 1:27 ` [PATCH v10 12/12] HID: nintendo: add support for charging grip Daniel J. Ogorchock
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