Re: [PATCH 5.15 0/3] can: kvaser_usb: CAN clock frequency regression

[Greg KH <gregkh@linuxfoundation.org>]

On Fri, Jul 08, 2022 at 08:48:43PM +0200, Jimmy Assarsson wrote:
> Backport of upstream patch series [1].
> 
> When fixing the CAN clock frequency,
> fb12797ab1fe ("can: kvaser_usb: get CAN clock frequency from device"),
> I introduced a regression.
> 
> For Leaf devices based on M32C, the firmware expects bittiming parameters
> calculated for 16MHz clock. Regardless of the actual clock frequency.
> 
> This regression affects M32C based Leaf devices with non-16MHz clock.
> 
> Also correct the bittiming constants in kvaser_usb_leaf.c, where the
> limits are different depending on which firmware/device being used.
> 
> [1]
> https://lore.kernel.org/linux-can/20220603083820.800246-1-extja@kvaser.com/
> 
> Jimmy Assarsson (3):
>   can: kvaser_usb: replace run-time checks with struct
>     kvaser_usb_driver_info
>   can: kvaser_usb: kvaser_usb_leaf: fix CAN clock frequency regression
>   can: kvaser_usb: kvaser_usb_leaf: fix bittiming limits
> 
>  drivers/net/can/usb/kvaser_usb/kvaser_usb.h   |  25 +-
>  .../net/can/usb/kvaser_usb/kvaser_usb_core.c  | 286 ++++++++++--------
>  .../net/can/usb/kvaser_usb/kvaser_usb_hydra.c |   4 +-
>  .../net/can/usb/kvaser_usb/kvaser_usb_leaf.c  | 119 ++++----
>  4 files changed, 244 insertions(+), 190 deletions(-)
> 
> -- 
> 2.36.1
> 

5.15, 5.10, 5.4, and 4.19 patches now queued up, thanks!

greg k-h