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[195.23.151.163]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-493f86556acsm58653585e9.1.2026.07.11.08.09.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 11 Jul 2026 08:10:00 -0700 (PDT) Sender: Julian Braha Message-ID: <1705e4f2-a0a3-4be0-a033-eacc1d54fcc7@gmail.com> Date: Sat, 11 Jul 2026 16:09:58 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] usb: musb: fix dead select of USB_MUSB_DUAL_ROLE To: Arnd Bergmann , Bin Liu , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, conor.dooley@microchip.com, daire.mcnamara@microchip.com, valentina.fernandezalanis@microchip.com, Michael Turquette , Stephen Boyd , claudiu.beznea@microchip.com, Jassi Brar , a.zummo@towertech.it, Alexandre Belloni , wsa@kernel.org, ben.dooks@codethink.co.uk, heinrich.schuchardt@canonical.com References: <20260711130349.592545-1-julianbraha@gmail.com> Content-Language: en-US From: Julian Braha In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Arnd, On 7/11/26 15:39, Arnd Bergmann wrote: > Good catch, but I wonder if this is actually a real dependency > at all. What would happen if you just remove the 'select' line > here and build a polarfire kernel that only supports > host or gadget mode but not dual-role? The kernel builds just fine for me with USB_MUSB_POLARFIRE_SOC=y and USB_MUSB_DUAL_ROLE=n But I don't have this hardware so I don't know what would happen at runtime. I've CC'd more people involved in patches to this config option. - Julian Braha