Re: [PATCH 6.1.y] can: gs_usb: increase max interface to U8_MAX

[Greg KH <greg@kroah.com>]

On Mon, Oct 20, 2025 at 08:26:17PM +0800, Celeste Liu wrote:
> commit 2a27f6a8fb5722223d526843040f747e9b0e8060 upstream
> 
> This issue was found by Runcheng Lu when develop HSCanT USB to CAN FD
> converter[1]. The original developers may have only 3 interfaces
> device to test so they write 3 here and wait for future change.
> 
> During the HSCanT development, we actually used 4 interfaces, so the
> limitation of 3 is not enough now. But just increase one is not
> future-proofed. Since the channel index type in gs_host_frame is u8,
> just make canch[] become a flexible array with a u8 index, so it
> naturally constraint by U8_MAX and avoid statically allocate 256
> pointer for every gs_usb device.
> 
> [1]: https://github.com/cherry-embedded/HSCanT-hardware
> 
> Fixes: d08e973a77d1 ("can: gs_usb: Added support for the GS_USB CAN devices")
> Reported-by: Runcheng Lu <runcheng.lu@hpmicro.com>
> Cc: stable@vger.kernel.org
> Reviewed-by: Vincent Mailhol <mailhol@kernel.org>
> Signed-off-by: Celeste Liu <uwu@coelacanthus.name>
> Link: https://patch.msgid.link/20250930-gs-usb-max-if-v5-1-863330bf6666@coelacanthus.name
> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
> ---
>  drivers/net/can/usb/gs_usb.c | 21 ++++++++++-----------
>  1 file changed, 10 insertions(+), 11 deletions(-)

Breaks the build :(