Commit 6fded8bc authored Oct 25, 2020 by Johan Hovold

USB: serial: keyspan_pda: increase transmitter threshold



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.

Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

parent 7184933b

drivers/usb/serial/keyspan_pda.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;

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