can: gs_usb: gs_can_open(): sort checks for ctrlmode

Sort the checks for dev->can.ctrlmode by values of CAN_CTRLMODE_*, so
that it's clear where to add new checks.

While there, remove the comment that the Atmel UC3C hardware doesn't
support One Shot Mode. The One Shot mode is only available and to be
activated by the user, if the device specifies the feature bit
GS_CAN_FEATURE_ONE_SHOT.

Link: https://lore.kernel.org/all/20221019221016.1659260-3-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
index aa6c84b7db066894aa442d5e9fe135053e72559d..5dad0ebb3d3e087af50290c60d40e1ba1f47925a 100644 (file)
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -843,8 +843,6 @@ static int gs_can_open(struct net_device *netdev)
 
        ctrlmode = dev->can.ctrlmode;
        if (ctrlmode & CAN_CTRLMODE_FD) {
-               flags |= GS_CAN_MODE_FD;
-
                if (dev->feature & GS_CAN_FEATURE_REQ_USB_QUIRK_LPC546XX)
                        dev->hf_size_tx = struct_size(hf, canfd_quirk, 1);
                else
@@ -915,14 +913,14 @@ static int gs_can_open(struct net_device *netdev)
        if (ctrlmode & CAN_CTRLMODE_LISTENONLY)
                flags |= GS_CAN_MODE_LISTEN_ONLY;
 
-       /* Controller is not allowed to retry TX
-        * this mode is unavailable on atmels uc3c hardware
-        */
+       if (ctrlmode & CAN_CTRLMODE_3_SAMPLES)
+               flags |= GS_CAN_MODE_TRIPLE_SAMPLE;
+
        if (ctrlmode & CAN_CTRLMODE_ONE_SHOT)
                flags |= GS_CAN_MODE_ONE_SHOT;
 
-       if (ctrlmode & CAN_CTRLMODE_3_SAMPLES)
-               flags |= GS_CAN_MODE_TRIPLE_SAMPLE;
+       if (ctrlmode & CAN_CTRLMODE_FD)
+               flags |= GS_CAN_MODE_FD;
 
        /* if hardware supports timestamps, enable it */
        if (dev->feature & GS_CAN_FEATURE_HW_TIMESTAMP)