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authorJason Andryuk <jandryuk@gmail.com>2020-03-16 13:46:09 -0400
committerGerd Hoffmann <kraxel@redhat.com>2020-03-17 09:05:33 +0100
commit30ad5fdd34d9cfc9f16e73e0229c133d7317a42a (patch)
treeeed8efab538474e0eda3ff5fc8ad2bdb046b26c4 /hw
parent87db78f743668224ae9a5346229faed56ef7ff66 (diff)
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 <jandryuk@gmail.com> Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Message-id: 20200316174610.115820-4-jandryuk@gmail.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/usb/dev-serial.c2
1 files changed, 1 insertions, 1 deletions
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