diff mbox series

[v2,3/4] usb-serial: Increase receive buffer to 496

Message ID 20200316174610.115820-4-jandryuk@gmail.com
State New
Headers show
Series usb-serial: xHCI and timeout fixes | expand

Commit Message

Jason Andryuk March 16, 2020, 5:46 p.m. UTC 
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 <jandryuk@gmail.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
---
 hw/usb/dev-serial.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

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