linux-kernel - Re: [PATCH v3 10/19] nvmem: microchip-otpc: Avoid reading a write-only register

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Message-ID: <a34bbde5-1dc8-4cad-8deb-f2e7855eb4f8@tuxon.dev>
Date: Sat, 31 Jan 2026 17:58:53 +0200
From: Claudiu Beznea <claudiu.beznea@...on.dev>
To: Alexander Dahl <ada@...rsis.com>
Cc: Nicolas Ferre <nicolas.ferre@...rochip.com>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>,
 Ryan Wanner <ryan.wanner@...rochip.com>,
 linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
 stable@...r.kernel.org, Srinivas Kandagatla <srini@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v3 10/19] nvmem: microchip-otpc: Avoid reading a
 write-only register



On 1/20/26 17:44, Alexander Dahl wrote:
> The OTPC Control Register (OTPC_CR) has just write-only members.
> Reading from that register leads to a warning in OTPC Write Protection
> Status Register (OTPC_WPSR) in field Software Error Type (SWETYP) of
> type READ_WO (A write-only register has been read (warning).)
> 
> Just create the register write content from scratch is sufficient here.
> 
> Fixes: 98830350d3fc ("nvmem: microchip-otpc: add support")
> Cc:stable@...r.kernel.org
> Signed-off-by: Alexander Dahl<ada@...rsis.com>

Reviewed-by: Claudiu Beznea <claudiu.beznea@...on.dev>