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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-63a52b71503sm86363a12.27.2025.10.09.09.08.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 09 Oct 2025 09:08:06 -0700 (PDT) Message-ID: <1cd57f5c-d829-4dbd-aac9-b07d0e155e4e@oss.qualcomm.com> Date: Thu, 9 Oct 2025 18:08:03 +0200 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH AUTOSEL 6.17-5.4] pinctrl: qcom: make the pinmuxing strict To: Sasha Levin , patches@lists.linux.dev, stable@vger.kernel.org Cc: Bartosz Golaszewski , Neil Armstrong , Linus Walleij , andersson@kernel.org, linux-arm-msm@vger.kernel.org References: <20251009155752.773732-1-sashal@kernel.org> <20251009155752.773732-60-sashal@kernel.org> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20251009155752.773732-60-sashal@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=Vrcuwu2n c=1 sm=1 tr=0 ts=68e7dde8 cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=x6icFKpwvdMA:10 a=KKAkSRfTAAAA:8 a=EUspDBNiAAAA:8 a=VwQbUJbxAAAA:8 a=FGwjZpymIQ_i5ujK4VkA:9 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-GUID: 0Ph8HtqZ-1sUXNF_FDh-neN3OrormkhI X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMDA4MDEyMSBTYWx0ZWRfX1YwMF9anxJxo 7JvLttrrAAuLs7uO6iRI+baHyYq+R+qZrrfDjOYrRBq0Vk34vAPu0cugUbi8Dp5+z3Gwlpf0q5R FzzUMghyQWgN5MV9MAofIn8/Fz9yPFcuZw9B8zFIO3sSAIEzDzSv0LjLdBnep12RTUq3gMRd/Vt EgnQJX3qmJolfp36JWE0kid32CHrpeSV1RuOLcBnTrVX7SkZswedBBnNBOG5Vb3PlAPaYmoq4Qg qJ4rDpKn+mNFqffMI8PyigYfRSsOSBgeShSNRFNHIk/S7RcDXZRizzQjHOAzp4R1My5NXYgO5Y6 D0z+IHlrbVMyVO2x+DLxLZ1P7NNfXisRa4i9KL7/fr6SoeArB0NyI7mkUgfbPVgBRYKHPTP9gxt ohDvGcOp9U2NKwXoPu2RWI5q3VyNCw== X-Proofpoint-ORIG-GUID: 0Ph8HtqZ-1sUXNF_FDh-neN3OrormkhI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-10-09_05,2025-10-06_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 impostorscore=0 clxscore=1031 adultscore=0 bulkscore=0 spamscore=0 suspectscore=0 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510020000 definitions=main-2510080121 On 10/9/25 5:55 PM, Sasha Levin wrote: > From: Bartosz Golaszewski > > [ Upstream commit cc85cb96e2e4489826e372cde645b7823c435de0 ] > > 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. > > Reviewed-by: Konrad Dybcio > Tested-by: Neil Armstrong > Signed-off-by: Bartosz Golaszewski > Signed-off-by: Linus Walleij > Signed-off-by: Sasha Levin > --- I didn't receive more related patches, but this had quite some dependencies (in pinctrl core and individual per-SoC drivers), which I'm not sure are worth all digging up and resolving conflicts Konrad