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Message-ID: <0b6a7895-bd87-4edb-b392-5000124ad133@linaro.org>
Date: Mon, 22 Jan 2024 14:14:25 +0100
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Subject: Re: [PATCH v3 2/5] reset: Instantiate reset GPIO controller for
 shared reset-gpios
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To: Philipp Zabel <p.zabel@pengutronix.de>,
 Bjorn Andersson <andersson@kernel.org>,
 Konrad Dybcio <konrad.dybcio@linaro.org>,
 Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
 Banajit Goswami <bgoswami@quicinc.com>, Liam Girdwood <lgirdwood@gmail.com>,
 Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
 Conor Dooley <conor+dt@kernel.org>, Peter Rosin <peda@axentia.se>,
 Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
 linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org,
 linux-sound@vger.kernel.org, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org
Cc: Bartosz Golaszewski <brgl@bgdev.pl>,
 Chris Packham <chris.packham@alliedtelesis.co.nz>,
 Sean Anderson <sean.anderson@seco.com>
References: <20240112163608.528453-1-krzysztof.kozlowski@linaro.org>
 <20240112163608.528453-3-krzysztof.kozlowski@linaro.org>
 <5ad7badb85bdece735901a0f6317183b1d628a68.camel@pengutronix.de>
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <5ad7badb85bdece735901a0f6317183b1d628a68.camel@pengutronix.de>
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On 17/01/2024 12:26, Philipp Zabel wrote:
> On Fr, 2024-01-12 at 17:36 +0100, Krzysztof Kozlowski wrote:
> [...]
>>  struct reset_control *
>>  __of_reset_control_get(struct device_node *node, const char *id, int index,
>>  		       bool shared, bool optional, bool acquired)
>>  {
>> +	struct of_phandle_args args = {0};
>> +	bool gpio_fallback = false;
>>  	struct reset_control *rstc;
>> -	struct reset_controller_dev *r, *rcdev;
>> -	struct of_phandle_args args;
>> +	struct reset_controller_dev *rcdev;
>>  	int rstc_id;
>>  	int ret;
>>  
>> @@ -839,39 +1028,49 @@ __of_reset_control_get(struct device_node *node, const char *id, int index,
>>  					 index, &args);
>>  	if (ret == -EINVAL)
>>  		return ERR_PTR(ret);
>> -	if (ret)
>> -		return optional ? NULL : ERR_PTR(ret);
>> +	if (ret) {
> 
> I think this should continue to return optional ? NULL : ERR_PTR(ret)
> if !IS_ENABLED(CONFIG_RESET_GPIO), for example by just skipping the
> of_parse_phandle_with_args(). That should allow the GPIO fallback in
> patch 5 to work as expected.
> 

ack

Best regards,
Krzysztof