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AJvYcCVpoezZ0lkmOOJGq5EvUqj8P2tQsEorMBzHRjlZFtqP8YdHcYgsdW3Lb2R2VvYJQA3x9h8htLL6UA==@kvack.org X-Gm-Message-State: AOJu0YzQzpNwyxvIX2zM1+ICcc0zWuvIZAx42+d4BGWHx9XDOZHfOs1a rJ9OgtqnIYCxTQEI+tLLERLRia1+STfLcbDoNWxhM9zcHTUgtEdin4I35glskxf3Mx7q9aH6Xu9 pPaBwZw7TTZLwyAY/9f7cBfNVVI/PqsUF4QvXSYg= X-Gm-Gg: ASbGnctylN/9LgvPXHfIGI3YX3k80QnnUEcCXjqVqkXp0+EwQzl56BYFDZ6idrBHiE9 CwzAR8Fe4N+YTbjWmB/4ZASRPG288ECc+yhDHgb7JJNs3SkBzQY2PDeeHb+Dbw1csGtSFlcm3Xm PHfFpw2rbK55XQOGL3KoFRdL0NmoKO0C4yEMaZN5/Piuvz6f3AmXdf7CBApoRqfqw8PMZ1nAlt3 31wOCHLQNaQFwM31w== X-Google-Smtp-Source: AGHT+IG4zlhdZMe5YSuufGeqwlIQK8acaeuuvg5xL+VVOl3StpGEjjD0yfcY2w04cC3rT7k1Cl4bbDXfAthjT80xlmI= X-Received: by 2002:a17:906:4fca:b0:b04:6546:347e with SMTP id a640c23a62f3a-b0465463a5bmr50237566b.51.1756846015338; Tue, 02 Sep 2025 13:46:55 -0700 (PDT) MIME-Version: 1.0 References: <20250902-pinctrl-gpio-pinfuncs-v7-0-bb091daedc52@linaro.org> <20250902-pinctrl-gpio-pinfuncs-v7-16-bb091daedc52@linaro.org> In-Reply-To: From: Andy Shevchenko Date: Tue, 2 Sep 2025 23:46:18 +0300 X-Gm-Features: Ac12FXzQiEATdvX4DXbIt31zcGrGliq36XoLvlgsSrCLd-DIw99Mu03fZo98CMc Message-ID: Subject: Re: [PATCH v7 16/16] pinctrl: qcom: make the pinmuxing strict To: Bartosz Golaszewski Cc: Andy Shevchenko , Linus Walleij , Bjorn Andersson , Konrad Dybcio , Alexey Klimov , Lorenzo Bianconi , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , Paul Cercueil , Kees Cook , Andy Shevchenko , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Dong Aisheng , Fabio Estevam , Shawn Guo , Jacky Bai , Pengutronix Kernel Team , NXP S32 Linux Team , Sascha Hauer , Tony Lindgren , Haojian Zhuang , Geert Uytterhoeven , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich , Neil Armstrong , Mark Brown , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, imx@lists.linux.dev, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Bartosz Golaszewski , Konrad Dybcio Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 785CBC0002 X-Stat-Signature: d3kb5gnezpaxsh3198b6ytkgu6ee3w5u X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1756846489-648913 X-HE-Meta: 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 PcDsp/3C 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Sep 2, 2025 at 8:42=E2=80=AFPM Bartosz Golaszewski = wrote: > > On Tue, Sep 2, 2025 at 4:38=E2=80=AFPM Andy Shevchenko > wrote: > > > > On Tue, Sep 02, 2025 at 01:59:25PM +0200, Bartosz Golaszewski wrote: > > > From: Bartosz Golaszewski > > > > > > The strict flag in struct pinmux_ops disallows the usage of the same = pin > > > as a GPIO and for another function. Without it, a rouge user-space > > > process with enough privileges (or even a buggy driver) can request a > > > used pin as GPIO and drive it, potentially confusing devices or even > > > crashing the system. Set it globally for all pinctrl-msm users. > > > > How does this keep (or allow) I=E6=B6=8E generic recovery mechanism to = work? > > What even is the "generic recovery mechanism"? That's the first time > I'm hearing this name. "I=C2=B2C generic recovery mechanism" (I dunno why you put away the I=C2=B2= C keyword). --=20 With Best Regards, Andy Shevchenko