Commit 30ad5fdd authored by Jason Andryuk's avatar Jason Andryuk Committed by Gerd Hoffmann
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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: default avatarJason Andryuk <jandryuk@gmail.com>
Reviewed-by: default avatarSamuel Thibault <samuel.thibault@ens-lyon.org>
Message-id: 20200316174610.115820-4-jandryuk@gmail.com
Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent 87db78f7

hw/usb/dev-serial.c

+1 −1
Original line number Diff line number Diff line
@@ -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