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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:xMLNsMDMoExXtk8amTMSXj6iXJlTM2/l7c0JjHImfUB5Tv8qxJI gt7yljcivfjY6Rft8MkIsFGyPR52oX6eE4hjr020W46qjBXAuY5Bx0L6ynVeEetQDdJ6ieI Nlicjda5qjNSizJvf0ZF1ISlGIHw2MwGckWV1nArvBiZH5F9lNT27RudR5x2Bvvayb+5FBr 67AYCBZ51eHYtjG9T226w== X-UI-Out-Filterresults: notjunk:1;V03:K0:z4R07IFe6KU=:lG/PZ3d0D5fuq6qVUuouyQ KIuNlRzaPHNPSXthjxSGzkMyuB4CttKZ4cnESESigle8l/VAOYKNNX8S/qMN3b0CQvybknQAS vdhE3DvNhtfl3dIbZ5xUivz8bALNGdsLEtsCgqCkxb5VPr5uxRVXhEXrkrwf7WZN8KGRJCRTG MZf3MuUBIu6XRX8yls7rzE3VltjmJwxpvicEZZZEbcbTdlzKdJtsBH84n6SDVaKOEoJDtoLPE wn5KuLEOxq4D8eXngxuG35f9WnqVav0XlRgQN2VIAxEDTcCqGZDE+uLFOnlsim6sQlQirTlHQ NAwY8TszyzzuGGnPnU4V/3ewtNP9oKPtm6eZDDoLlhwBBYGTBD16MudXc6MzoQW1cFziiixAn usckauUWljv1qulmN8NxA8uXlmnjacJVyERUg0cJIwaoLrO8dMTtpy6yw0XMMXuoWxh6ciN6V sbOQhoUmllQTxMv6fIxSw376tUPjPuBm0LGsJ550UfuVZI83aCd9YZ5sMcYq7KXSyqjexMcty l0ctWGeIKmTzhz1W0XHMCeyTgDscQ6KOYSsC1Bl62/2bK4jRd6Ionb7eMlnmkRWD1FAY/A+hu +C4bN+4++gT/aZ3BC+FD5KfCGyq9xyeuzKRgESyCXQf2F82IJ2+HsaA8eDYaFKkADVebD/4Zv XeCEuc6+csuSMazCv5pO0FDBWdhpKawz40sL9X4japr9X8+cZhSFGsfdfuc4c6eNKYSS12MJm jl2XOpB+pnZjhELB5wwVPuZwnoZ1G/iXRJzfnaG6h56hnRlhEJt+ywwEmlLD+m2lGC/8ApV4A ZlT3ShSyw+roEsOlqxptnkrAzxIzyrqGtwqIOwT/KKGG7HSAlJtmgSYI6bszIoDCZ2UKDK+wp DZg9+pvX8sWRTHjCAf1OaIOaNNIh0BR/0VfHa1UngZoFB0uq+VVYmPt118jEek60S5Lpe8G/t yzgK6j3JhL6ttDDMGDMICWw0wdVrr4kWQoFXEzi2XRB2D9zWmIQlwOHhNTtL+/3cow4F9DAAn KGr2Gup6g1lW6Na88dqWrgU68hss4f+PcIfGD3Kji5mB14p5Ko+PmGTL/l5C8gMasbbJAb34n 0SlxOL/2nAFJ2i2T5lQLCa6fM90BJ6kFOyq0TUouu/LAKYEodyoVndALnsITbuZd+XYE9nCqB SonsifY+g8Gwv+etoJRfYtTkjJeRzUgvVMEd7UtWAhpqjccJwwlwOtM6tpOxIWVhcQnhMgYdu 0J6eITdNmhSpECsE0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, I have taken another look at the implementation of the function =E2=80=9Cf= sl_udc_probe=E2=80=9D. A software analysis approach points the following source code out for further development considerations. https://elixir.bootlin.com/linux/v5.6.2/source/drivers/usb/gadget/udc/fsl_= udc_core.c#L2443 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/dr= ivers/usb/gadget/udc/fsl_udc_core.c?id=3Df5e94d10e4c468357019e5c28d48499f6= 77b284f#n2442 udc_controller->irq =3D platform_get_irq(pdev, 0); if (!udc_controller->irq) { ret =3D -ENODEV; goto err_iounmap; } The software documentation is providing the following information for the used programming interface. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/dr= ivers/base/platform.c?id=3Df5e94d10e4c468357019e5c28d48499f677b284f#n221 https://elixir.bootlin.com/linux/v5.6.2/source/drivers/base/platform.c#L20= 2 =E2=80=9C=E2=80=A6 * Return: IRQ number on success, negative error number on failure. =E2=80=A6=E2=80=9D Would you like to reconsider the shown condition check? Regards, Markus