can: gs_usb: gs_make_candev(): populate net_device->dev_port

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commit a12f0bc764 upstream.

The gs_usb driver supports USB devices with more than 1 CAN channel.
In old kernel before 3.15, it uses net_device->dev_id to distinguish
different channel in userspace, which was done in commit
acff76fa45 ("can: gs_usb: gs_make_candev(): set netdev->dev_id").
But since 3.15, the correct way is populating net_device->dev_port.
And according to documentation, if network device support multiple
interface, lack of net_device->dev_port SHALL be treated as a bug.

Fixes: acff76fa45 ("can: gs_usb: gs_make_candev(): set netdev->dev_id")
Cc: stable@vger.kernel.org
Signed-off-by: Celeste Liu <uwu@coelacanthus.name>
Link: https://patch.msgid.link/20250930-gs-usb-populate-net_device-dev_port-v1-1-68a065de6937@coelacanthus.name
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Celeste Liu 2025-09-30 14:53:39 +08:00 • committed by Greg Kroah-Hartman

parent 3fdcfd91b9

commit 52eb720e5b

1 changed files with 1 additions and 0 deletions

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drivers/net/can/usb/gs_usb.c

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