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[09/14] USB: serial: keyspan_pda: increase transmitter threshold

Message ID 20201025174600.27896-10-johan@kernel.org (mailing list archive)
State New, archived
Headers show
Series USB: serial: keyspan_pda: fix up write implementation | expand

Commit Message

Johan Hovold Oct. 25, 2020, 5:45 p.m. UTC 
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(-)
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Patch

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;