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Date:   Thu, 28 Jul 2022 12:49:17 +0200
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Subject: Re: [PATCH 4/4] dt-bindings: firmware: Add Qualcomm UEFI Secure
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To:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Ard Biesheuvel <ardb@kernel.org>
Cc:     Konrad Dybcio <konrad.dybcio@somainline.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Steev Klimaszewski <steev@kali.org>,
        Shawn Guo <shawn.guo@linaro.org>,
        Sudeep Holla <sudeep.holla@arm.com>,
        Cristian Marussi <cristian.marussi@arm.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-arm-msm@vger.kernel.org, linux-efi@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        Vinod Koul <vkoul@kernel.org>
References: <20220723224949.1089973-1-luzmaximilian@gmail.com>
 <20220723224949.1089973-5-luzmaximilian@gmail.com>
 <e88d1036-dc58-3fc8-c388-edba9b2d62a7@linaro.org>
 <87c19c5a-d7f4-7183-1322-f62267e01b3b@gmail.com>
 <11e5c369-c0da-7756-b9e2-ac375dc78e9d@linaro.org>
 <2e522bcd-5d55-e87f-126c-514f5edaa560@gmail.com>
 <53a602e2-0590-6c6a-597b-fd55faa3a4ab@linaro.org>
 <acd7b231-3167-e35c-5cdf-8b3127a7d710@gmail.com>
 <95cbcda8-d1bc-376c-b338-92d1b923f04a@linaro.org>
 <fe2b820b-9f3b-814b-4792-e6685b13ede6@gmail.com>
 <d8510e53-673a-7913-32be-1be691a79511@linaro.org>
From:   Maximilian Luz <luzmaximilian@gmail.com>
In-Reply-To: <d8510e53-673a-7913-32be-1be691a79511@linaro.org>
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On 7/28/22 12:38, Krzysztof Kozlowski wrote:
> On 28/07/2022 12:25, Maximilian Luz wrote:
>> On 7/28/22 09:48, Krzysztof Kozlowski wrote:
>>
>> [...]
>>
>>>
>>> For example like tegra_bpmp_get() is doing.
>>
>> But tegra_bpmp_get() can also not differentiate whether the supplier driver is
>> ever going to be successfully probed or not. I'm not sure you can ever really
>> solve that. The only thing it does in addition is check whether the phandle and
>> device is there. Or do you mean those not being present by "broken"? That's a
>> point I agree should be improved with SCM.
> 
> Yes, at least it checks if phandles points to proper device and device
> is there. That's what we want.
> 
> We are not solving here case of providing being in a module which never
> gets loaded (thus endless EPROBE_DEFER). Such case is ok.

Got it, thanks for that clarification!

Regards,
Max