linux-kernel - [PATCH 04/12] can: kvaser_usb: Mark Mini PCIe 2xHS as supporting error counters

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Date:   Mon, 16 May 2022 16:47:40 +0300
From:   Anssi Hannula <anssi.hannula@...wise.fi>
To:     Jimmy Assarsson <extja@...ser.com>
Cc:     linux-can@...r.kernel.org, Marc Kleine-Budde <mkl@...gutronix.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 04/12] can: kvaser_usb: Mark Mini PCIe 2xHS as supporting error counters

The 0bfd:0124 Kvaser Mini PCI Express 2xHS (FW 4.18.778) seems to support
TX/RX error counters in exactly the same way (via unsolicited cmd 106 on
bus errors and via cmd 20 when queried with cmd 19) as 0bfd:0017 Kvaser
Memorator Professional HS/HS (FW 2.0.50), but only the latter has
KVASER_USB_HAS_TXRX_ERRORS set to enable do_get_berr_counter().

Enable error counter retrieval for Kvaser Mini PCI Express 2xHS, too.

Fixes: 71873a9b38d1 ("can: kvaser_usb: Add support for more Kvaser Leaf v2 devices")
Signed-off-by: Anssi Hannula <anssi.hannula@...wise.fi>

---

I'm not really sure what KVASER_USB_HAS_TXRX_ERRORS means, exactly,
w.r.t. device behavior, though, i.e. how does a device without it behave.


 drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c
index 47bff40c36b6..7388fdca9079 100644
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c
@@ -165,7 +165,8 @@ static const struct usb_device_id kvaser_usb_table[] = {
 	{ USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_HS_PRODUCT_ID) },
 	{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LIGHT_HS_V2_OEM_PRODUCT_ID) },
 	{ USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN_LIGHT_2HS_PRODUCT_ID) },
-	{ USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_2HS_PRODUCT_ID) },
+	{ USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_2HS_PRODUCT_ID),
+		.driver_info = KVASER_USB_HAS_TXRX_ERRORS },
 	{ USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN_R_V2_PRODUCT_ID) },
 	{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LIGHT_R_V2_PRODUCT_ID) },
 	{ USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LIGHT_HS_V2_OEM2_PRODUCT_ID) },
-- 
2.34.1