From: Johan Hovold <johan@kernel.org>
To: linux-usb@vger.kernel.org
Cc: "Ahmed S . Darwish" <a.darwish@linutronix.de>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, Johan Hovold <johan@kernel.org>
Subject: [PATCH 09/14] USB: serial: keyspan_pda: increase transmitter threshold
Date: Sun, 25 Oct 2020 18:45:55 +0100 [thread overview]
Message-ID: <20201025174600.27896-10-johan@kernel.org> (raw)
In-Reply-To: <20201025174600.27896-1-johan@kernel.org>
Increase the transmitter threshold so that writing isn't resumed until
128 bytes are available in the device buffer thereby allowing for larger
and more efficient transfers.
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/usb/serial/keyspan_pda.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index b3fb2ecefb31..3816bbc928b2 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -40,7 +40,7 @@
#define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>"
#define DRIVER_DESC "USB Keyspan PDA Converter driver"
-#define KEYSPAN_TX_THRESHOLD 16
+#define KEYSPAN_TX_THRESHOLD 128
struct keyspan_pda_private {
int tx_room;
--
2.26.2
next prev parent reply other threads:[~2020-10-25 17:46 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-25 17:45 [PATCH 00/14] USB: serial: keyspan_pda: fix up write implementation Johan Hovold
2020-10-25 17:45 ` [PATCH 01/14] USB: serial: keyspan_pda: fix dropped unthrottle interrupts Johan Hovold
2020-10-25 17:45 ` [PATCH 02/14] USB: serial: keyspan_pda: fix write deadlock Johan Hovold
2020-10-25 17:45 ` [PATCH 03/14] USB: serial: keyspan_pda: fix stalled writes Johan Hovold
2020-10-25 17:45 ` [PATCH 04/14] USB: serial: keyspan_pda: fix write-wakeup use-after-free Johan Hovold
2020-10-25 17:45 ` [PATCH 05/14] USB: serial: keyspan_pda: fix tx-unthrottle use-after-free Johan Hovold
2020-10-25 17:45 ` [PATCH 06/14] USB: serial: keyspan_pda: fix write unthrottling Johan Hovold
2020-10-25 17:45 ` [PATCH 07/14] USB: serial: keyspan_pda: refactor write-room handling Johan Hovold
2020-10-25 17:45 ` [PATCH 08/14] USB: serial: keyspan_pda: fix write implementation Johan Hovold
2020-10-25 17:45 ` Johan Hovold [this message]
2020-10-25 17:45 ` [PATCH 10/14] USB: serial: keyspan_pda: add write-fifo support Johan Hovold
2020-10-25 17:45 ` [PATCH 11/14] USB: serial: keyspan_pda: clean up xircom/entrega support Johan Hovold
2020-10-26 12:00 ` Sebastian Andrzej Siewior
2020-10-27 8:09 ` Johan Hovold
2020-10-27 9:25 ` [PATCH v2 " Johan Hovold
2020-10-27 9:25 ` Johan Hovold
2020-10-25 17:45 ` [PATCH 12/14] USB: serial: keyspan_pda: clean up comments and whitespace Johan Hovold
2020-10-25 17:45 ` [PATCH 13/14] USB: serial: keyspan_pda: use BIT() macro Johan Hovold
2020-10-25 17:46 ` [PATCH 14/14] USB: serial: keyspan_pda: drop redundant usb-serial pointer Johan Hovold
2020-10-26 12:13 ` [PATCH 00/14] USB: serial: keyspan_pda: fix up write implementation Sebastian Andrzej Siewior
2020-10-27 8:11 ` Johan Hovold
2020-10-28 9:38 ` Greg KH
2020-11-04 10:04 ` Johan Hovold
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