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SubjectRe: [PATCH v6 0/4] can: esd: add support for esd GmbH PCIe/402 CAN interface
Date
Hi,

is there any chance to get this patch
https://lore.kernel.org/linux-can/20211201220328.3079270-1-stefan.maetje@esd.eu/
in the upcoming
5.17 release?

The patch still applies cleanly to linux-can-next "testing" at this tag:

https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git/tag/?h=linux-can-next-for-5.17-20220105

If it helps I would provide a patch v7 that is rebased to the mentioned
tag.

Any comment is appreciated.

Best regards,
Stefan Mätje


Am Mittwoch, den 01.12.2021, 22:09 +0000 schrieb Stefan Mätje:
> Hi,
>
> this is really patch v6. Missed to change the email subject. My bad.
>
> Best regards,
> Stefan Mätje
>
> Am Mittwoch, den 01.12.2021, 23:03 +0100 schrieb Stefan Mätje:
> > The purpose of this patch is to introduce a new CAN driver to support
> > the esd GmbH 402 family of CAN interface boards. The hardware design
> > is based on a CAN controller implemented in a FPGA attached to a
> > PCIe link.
> >
> > More information on these boards can be found following the links
> > included in the commit message.
> >
> > This patch supports all boards but will operate the CAN-FD capable
> > boards only in Classic-CAN mode. The CAN-FD support will be added
> > when the initial patch has stabilized.
> >
> > The patch is reuses the previous work of my former colleague:
> > Link:
> > https://lore.kernel.org/linux-can/1426592308-23817-1-git-send-email-thomas.koerper@esd.eu/
> >
> > *Note*: scripts/checkpatch.pl still emits the following warnings:
> > - esd_402_pci-core.c:270: Possible unnecessary 'out of memory' message
> > This error message is there to tell the user that the DMA allocation
> > failed and not an allocation for normal kernel memory.
> > - esdacc.h:255: The irq_cnt pointer is still declared volatile and
> > this has a reason and is explained in detail in the header
> > referencing the exception noted in volatile-considered-harmful.rst.
> >
> > The patch is based on the linux-can-next testing branch.
> >
> > Changes in v6:
> > - Fixed the statistic handling of RX overrun errors and increase
> > net_device_stats::rx_errors instead of net_device_stats::rx_dropped.
> > - Added a patch to not increase rx statistics when generating a CAN
> > rx error message frame as suggested on the linux-can list.
> > - Added a patch to not not increase rx_bytes statistics for RTR frames
> > as suggested on the linux-can list.
> >
> > The last two patches change the statistics handling from the previous
> > style used in other drivers to the newly suggested one.
> >
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