Re: [PATCH] can/peak_pci: fix FPGA potential frame loss issue

[Andri Yngvason <andri.yngvason@marel.com>]

On Wed, Jan 20, 2016 at 12:15:32PM +0100, Stephane Grosjean wrote:
> This patch installs a workaround when the driver detects one of the
> following PEAK-System CAN interfaces, running a firmware < v1.3.0:
> 
> PCAN-PCI Express 1/2/4 CAN; DeviceID 0x0003
> PCAN-PCI/104 Express 1/2/4 CAN; DeviceID 0x0007
> PCAN-miniPCIe 1/2 CAN; DeviceID 0x0008
> PCAN-PCI Express OEM 1/2/4 CAN; DeviceID 0x0009
> PCAN-ExpressCard 34 1 CAN; DeviceID 0x000A
> 
> This fixes potential loss of one tx frame in Linux SMP when some other
> task does another Command Register write (e.g. Release Receive Buffer)
> in between the triggering Tx Request and the next Sample Point.
> 
> This workaround is useless thus *NOT* installed when the firmware
> has been upgraded to v1.3.0 or higher, nor if the CAN interface is equipped
> with true SJA1000 controller(s).
> 
> Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
> ---
>  drivers/net/can/sja1000/peak_pci.c | 34 +++++++++++++++++++++++++++++++++-
>  1 file changed, 33 insertions(+), 1 deletion(-)
> 
[...]

Hi Stéphane,

Is this still being worked on?

I can test this if you like. I just need to have the firmware upgrade.

Regards,
Andri