USB: serial: cypress_m8: fix interrupt-out transfer length

BugLink: https://bugs.launchpad.net/bugs/1854216
[ Upstream commit 56445eef55cb5904096fed7a73cf87b755dfffc7 ]

Fix interrupt-out transfer length which was being set to the
transfer-buffer length rather than the size of the outgoing packet.

Note that no slab data was leaked as the whole transfer buffer is always
cleared before each transfer.

Fixes: 9aa8dae7b1fa ("cypress_m8: use usb_fill_int_urb where appropriate")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index e0035c0231202da04e88830e9b2c3e11e8416aad..2c58649fd47a4d121ebbd2aecdb0b2e98e8c3091 100644 (file)
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -769,7 +769,7 @@ send:
 
        usb_fill_int_urb(port->interrupt_out_urb, port->serial->dev,
                usb_sndintpipe(port->serial->dev, port->interrupt_out_endpointAddress),
-               port->interrupt_out_buffer, port->interrupt_out_size,
+               port->interrupt_out_buffer, actual_size,
                cypress_write_int_callback, port, priv->write_urb_interval);
        result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC);
        if (result) {