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