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From: Michael Zaidman <michael.zaidman@gmail.com>
To: chrysh@christina-quast.de, daniel.beer@igorinstitute.com,
	jikos@kernel.org
Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org,
	linux-serial@vger.kernel.org, ilpo.jarvinen@linux.intel.com,
	johan@kernel.org, gregkh@linuxfoundation.org, equinox@diac24.net,
	michael.zaidman@gmail.com
Subject: [PATCH v1 17/19] hid-ft260: uart: arm wake-up timer unconditionally on tty session start
Date: Sat, 10 Feb 2024 23:51:45 +0200	[thread overview]
Message-ID: <20240210215147.77629-18-michael.zaidman@gmail.com> (raw)
In-Reply-To: <20240210215147.77629-1-michael.zaidman@gmail.com>

The previous session deactivated the wake-up workaround. The next session calls
ft260_uart_port_activate while the wake-up workaround flag is yet deactivated.
It is enabled later, conditionally, in the ft260_uart_change_speed. Thus, the
timer is never armed again, and the device enters power-saving mode and misses
the incoming data.

Arming the wake-up timer unconditionally on the tty session start resolved the
issue.

Signed-off-by: Michael Zaidman <michael.zaidman@gmail.com>
---
 drivers/hid/hid-ft260.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/hid-ft260.c b/drivers/hid/hid-ft260.c
index d7eb00aeb669..7f3ef4f20075 100644
--- a/drivers/hid/hid-ft260.c
+++ b/drivers/hid/hid-ft260.c
@@ -1510,10 +1510,8 @@ static int ft260_uart_port_activate(struct tty_port *tport, struct tty_struct *t
 	/* Wake up the chip as early as possible to not miss incoming data */
 	ft260_uart_wakeup(port);
 
-	if (port->reschedule_work) {
-		mod_timer(&port->wakeup_timer, jiffies +
-			  msecs_to_jiffies(FT260_WAKEUP_NEEDED_AFTER_MS));
-	}
+	mod_timer(&port->wakeup_timer, jiffies +
+		  msecs_to_jiffies(FT260_WAKEUP_NEEDED_AFTER_MS));
 
 	return 0;
 }
-- 
2.40.1


  parent reply	other threads:[~2024-02-10 21:53 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-10 21:51 [PATCH v1 00/19] hid-ft260: Fixes for serial driver patch v4 Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 01/19] hid-ft260: fix incompatible-pointer-types error Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 02/19] hid-ft260: fix Wformat warning Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 03/19] hid-ft260: fix i2c driver regression in ft260_raw_event Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 04/19] hid-ft260: remove dead code in ft260_uart_receive_chars Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 05/19] hid-ft260: fix unprotected write_buf concurrent access Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 06/19] hid-ft260: uart: enable wakeup workaround Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 07/19] hid-ft260: depend wakeup workaround activation on uart baud rate Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 08/19] hid-ft260: depend wakeup workaround activation on eeprom config Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 09/19] hid-ft260: uart: wakeup device early to not lose rx data Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 10/19] hid-ft260: uart: do not configure baud rate twice Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 11/19] hid-ft260: uart: do not disable wakeup workaround twice Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 12/19] hid-ft260: uart: use kfifo_avail for fifo write room check Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 13/19] hid-ft260: improve usb interface type detection logic Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 14/19] hid-ft260: uart: cleanup and refactoring Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 15/19] hid-ft260: uart: remove FIXME for wake-up workaround Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 16/19] hid-ft260: uart: suppress unhandled report 0xb1 dmesg Michael Zaidman
2024-02-10 21:51 ` Michael Zaidman [this message]
2024-02-10 21:51 ` [PATCH v1 18/19] hid-ft260: uart: fix rx data loss after device reopening Michael Zaidman
2024-02-10 21:51 ` [PATCH v1 19/19] hid-ft260: uart: improve write performance Michael Zaidman
2024-02-23 21:22   ` Michael Zaidman
2024-02-13 10:20 ` [PATCH v1 00/19] hid-ft260: Fixes for serial driver patch v4 Jiri Kosina
2024-02-23 13:07   ` Christina Quast

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