From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 739902F60DA; Thu, 30 Oct 2025 18:21:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761848505; cv=none; b=ARVoXkHG5Us17wIC/NM1+X3gX2lQV8n9oGYyWAZW8kfFigxIWwsvcfNx7dWWWTmWi1EghcActzyuyCYc4N+uhb+5nh0XNqRsiez2MjA0Dvvg/w21TmDB3IqfH/YH06WCkZNYO+CsDi9bbAKog1ZE3+hFRFkhpzFJ1lfQ4QeZRPY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761848505; c=relaxed/simple; bh=RosfrqCKiQqp7UdTzbvEclGc3HGPz0C49g8iWkjlsms=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=dfkWDY0aIg84cSUGPWUOQ92BQFnYLs6KMUPrulucDRumnddIyi1NNpHhCR3SOL5l+uWngA02ZT8nrq08DcgcdJQmFneQN8l9/QtldOgIyRyTyAM5FgB/xsN9DwwsSRs96hZfHARhQ3DaurfvMdLdZR8ak1dxImxrlb8wsutw/+M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=K8koGIKD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="K8koGIKD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CA5BAC4CEF1; Thu, 30 Oct 2025 18:21:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761848505; bh=RosfrqCKiQqp7UdTzbvEclGc3HGPz0C49g8iWkjlsms=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=K8koGIKDRZ4CRbwawcHi772IxPA3cSVtcGly52GqwCJtpsa+plMR5MgJ0ltxVXALu bPIz+9ACwamMMsvcuORe59ekYZJvfMy2QPJgyH56MR5lbaHCMCBBueq4uG+Vm3OCVd KnS/WxHVMDFEHlXNTlp3CH+AmpB8/24QXF+Siu4DCF5x71/S9Jb3tK/eR1eihANQjG r9LV8kACrHwQQnAd9xsJFxxkmQu4RrLH8GYZh4m/FBcKhbHL5Y7hj7wvgRrlbDEt8D RzmqckCkJ4FdnvR1MUShjaZ6lBsnForrstFCMleUP4XzuaPvTz1FBApJrTlnms9Kd+ mHs9OxGD62UjQ== Date: Thu, 30 Oct 2025 13:21:38 -0500 From: Rob Herring To: Dan Carpenter Cc: Chen-Yu Tsai , Arnd Bergmann , John Madieu , Lee Jones , Conor Dooley , devicetree@vger.kernel.org, Krzysztof Kozlowski , linux-kernel@vger.kernel.org, =?iso-8859-1?Q?Andr=E9?= Draszik , Peter Griffin Subject: Re: [PATCH 0/2] mfd: syscon: introduce no-auto-mmio DT property Message-ID: <20251030182138.GB130921-robh@kernel.org> References: <3fd4beba-0d0b-4a20-b6ed-4e00df109b66@app.fastmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Thu, Oct 30, 2025 at 04:09:52PM +0300, Dan Carpenter wrote: > Yeah. Let me send this tommorrow if no one objects. Pretty simple > solution in retrospect. > > [PATCH] mfd: syscon: Return -EPROBE_DEFER in device_node_get_regmap() > > These days we can register syscons with of_syscon_register_regmap() so > if we can't find the syscon that probably means it hasn't been registered > yet. Return -EPROBE_DEFER so the driver will try probing again. > > Signed-off-by: Dan Carpenter > --- > drivers/mfd/syscon.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > Acked-by: Rob Herring (Arm) > diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c > index ae71a2710bed..e5d5def594f6 100644 > --- a/drivers/mfd/syscon.c > +++ b/drivers/mfd/syscon.c > @@ -183,7 +183,7 @@ static struct regmap *device_node_get_regmap(struct device_node *np, > if (create_regmap) > syscon = of_syscon_register(np, check_res); > else > - syscon = ERR_PTR(-EINVAL); > + syscon = ERR_PTR(-EPROBE_DEFER); > } > mutex_unlock(&syscon_list_lock); > > -- > 2.51.0 >