From 30ad5fdd34d9cfc9f16e73e0229c133d7317a42a Mon Sep 17 00:00:00 2001 From: Jason Andryuk Date: Mon, 16 Mar 2020 13:46:09 -0400 Subject: [PATCH] usb-serial: Increase receive buffer to 496 A FTDI USB adapter on an xHCI controller can send 512 byte USB packets. These are 8 * ( 2 bytes header + 62 bytes data). A 384 byte receive buffer is insufficient to fill a 512 byte packet, so bump the receive size to 496 ( 512 - 2 * 8 ). Signed-off-by: Jason Andryuk Reviewed-by: Samuel Thibault Message-id: 20200316174610.115820-4-jandryuk@gmail.com Signed-off-by: Gerd Hoffmann --- hw/usb/dev-serial.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/usb/dev-serial.c b/hw/usb/dev-serial.c index ec091b6a36..77b964588b 100644 --- a/hw/usb/dev-serial.c +++ b/hw/usb/dev-serial.c @@ -29,7 +29,7 @@ do { printf("usb-serial: " fmt , ## __VA_ARGS__); } while (0) #define DPRINTF(fmt, ...) do {} while(0) #endif -#define RECV_BUF 384 +#define RECV_BUF (512 - (2 * 8)) /* Commands */ #define FTDI_RESET 0