linux-kernel - Re: [PATCH RESEND v7 0/3] can: xilinx

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Date: Tue, 13 Feb 2024 12:00:24 +0100
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: Srinivas Goud <srinivas.goud@....com>
Cc: wg@...ndegger.com, davem@...emloft.net, edumazet@...gle.com, 
	kuba@...nel.org, pabeni@...hat.com, robh+dt@...nel.org, 
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, p.zabel@...gutronix.de, git@....com, 
	michal.simek@...inx.com, linux-can@...r.kernel.org, netdev@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND v7 0/3] can: xilinx_can: Add ECC feature support

On 13.02.2024 11:22:49, Marc Kleine-Budde wrote:
> On 12.01.2024 17:07:30, Srinivas Goud wrote:
> > Add ECC feature support to Tx and Rx FIFOs for Xilinx CAN Controller.
> > ECC is an IP configuration option where counter registers are added in
> > IP for 1bit/2bit ECC errors count and reset.
> > Also driver reports 1bit/2bit ECC errors for FIFOs based on ECC error
> > interrupts.
> > 
> > Add xlnx,has-ecc optional property for Xilinx AXI CAN controller
> > to support ECC if the ECC block is enabled in the HW.
> > 
> > Add ethtool stats interface for getting all the ECC errors information.
> > 
> > There is no public documentation for it available.
> 
> Lately I was using ethtool based stats, too and figured out, there's no
> need for a spinlock, you can use a struct u64_stats_sync,
> u64_stats_update_begin(), u64_stats_update_end(), and
> u64_stats_fetch_retry() instead. These are no-ops on 64 bit systems and
> sequential locks on 32 bit systems.
> 
> I'll send a v8.

https://lore.kernel.org/all/20240213-xilinx_ecc-v8-0-8d75f8b80771@pengutronix.de/

Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde          |
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