6.11-stable review patch. If anyone has any objections, please let me know.
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From: Stefan Mätje stefan.maetje@esd.eu
commit 75b3189540578f96b4996e4849b6649998f49455 upstream.
Remove the CAN_CTRLMODE_3_SAMPLES announcement for CAN-USB/3-FD devices because these devices don't support it.
The hardware has a Microchip SAM E70 microcontroller that uses a Bosch MCAN IP core as CAN FD controller. But this MCAN core doesn't support triple sampling.
Fixes: 80662d943075 ("can: esd_usb: Add support for esd CAN-USB/3") Cc: stable@vger.kernel.org Signed-off-by: Stefan Mätje stefan.maetje@esd.eu Reviewed-by: Vincent Mailhol mailhol.vincent@wanadoo.fr Link: https://patch.msgid.link/20240904222740.2985864-2-stefan.maetje@esd.eu Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/can/usb/esd_usb.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
--- a/drivers/net/can/usb/esd_usb.c +++ b/drivers/net/can/usb/esd_usb.c @@ -3,7 +3,7 @@ * CAN driver for esd electronics gmbh CAN-USB/2, CAN-USB/3 and CAN-USB/Micro * * Copyright (C) 2010-2012 esd electronic system design gmbh, Matthias Fuchs socketcan@esd.eu - * Copyright (C) 2022-2023 esd electronics gmbh, Frank Jungclaus frank.jungclaus@esd.eu + * Copyright (C) 2022-2024 esd electronics gmbh, Frank Jungclaus frank.jungclaus@esd.eu */
#include <linux/can.h> @@ -1116,9 +1116,6 @@ static int esd_usb_3_set_bittiming(struc if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) flags |= ESD_USB_3_BAUDRATE_FLAG_LOM;
- if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES) - flags |= ESD_USB_3_BAUDRATE_FLAG_TRS; - baud_x->nom.brp = cpu_to_le16(nom_bt->brp & (nom_btc->brp_max - 1)); baud_x->nom.sjw = cpu_to_le16(nom_bt->sjw & (nom_btc->sjw_max - 1)); baud_x->nom.tseg1 = cpu_to_le16((nom_bt->prop_seg + nom_bt->phase_seg1) @@ -1219,7 +1216,6 @@ static int esd_usb_probe_one_net(struct switch (le16_to_cpu(dev->udev->descriptor.idProduct)) { case ESD_USB_CANUSB3_PRODUCT_ID: priv->can.clock.freq = ESD_USB_3_CAN_CLOCK; - priv->can.ctrlmode_supported |= CAN_CTRLMODE_3_SAMPLES; priv->can.ctrlmode_supported |= CAN_CTRLMODE_FD; priv->can.bittiming_const = &esd_usb_3_nom_bittiming_const; priv->can.data_bittiming_const = &esd_usb_3_data_bittiming_const;