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[93.23.13.75]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-42f7cbfeb38sm14027048f8f.12.2025.12.06.03.54.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 Dec 2025 03:54:47 -0800 (PST) From: Bartosz Golaszewski Subject: [PATCH 0/4] gpio: shared: fix some bugs in unregister and error paths Date: Sat, 06 Dec 2025 12:53:52 +0100 Message-Id: <20251206-gpio-shared-teardown-fixes-v1-0-35ac458cfce1@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAFEZNGkC/x2MwQqDMBAFf0X23AWzqRT9FekhmFfdSyK70hbEf 2/ocRhmTnKYwmnqTjK81bWWBuHW0bKlsoI1NybpZQjSD7zuWtm3ZMh8IFmun8Iv/cI5B8hdxhj j8qA22A1/0fr5eV0/MjrAxWwAAAA= X-Change-ID: 20251205-gpio-shared-teardown-fixes-d1e2429333c7 To: Linus Walleij , Bartosz Golaszewski Cc: Linus Walleij , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=810; i=bartosz.golaszewski@oss.qualcomm.com; h=from:subject:message-id; bh=s5DD75m1OIlelZLkDbB/fNYkgmI+Vo8fxd2et8OUAaA=; b=owEBbQKS/ZANAwAKAQWdLsv/NoTDAcsmYgBpNBllL/q+UR/XWCKLsUrBy5d/J6Hzjn+lYO59X i72p3pPmfOJAjMEAAEKAB0WIQSR5RMt5bVGHXuiZfwFnS7L/zaEwwUCaTQZZQAKCRAFnS7L/zaE w0oED/4rF/llkIyMf2vBO5FvFQ0fQkmVYfAie6jmPXAPFJJtQK+7Qer5+Bxl3cuatWq+Wn7OgfY R4TkxUzH0eLYRZLjDtkmvE4NNNy9+/RutR+/yqQn3FnaCGP2oeN37QgUj3yHUT9gKvVwgmBpzPQ TH5n18Bjb5lwxb/sODkHfjpmThUPFQCRkMloKsY0NWZjek2Czw72FIbOAEVqpLNlK1KaZH2HX6H 9EBhts30FonX4dksjt358F1+MkZpYNxDpEgmqlFbOuq/h3tslrz+QJvB4IREefyUkkfn2sBkmH9 840PuEItaZd5FMiG6hP3S8WnlGby3sN9Pi3pXyWJXQRxtNoUZkA2jm/io4tgEgJI5d1kYg1XDCp 29EoPSDbm79JQfobI8ptY0FeEW8/X3Q2RtQZ6LFjqXcMjPB607ot85ELOLnUHkJt02xvFv3lFcA rlusES+4QP3HfyMYxhV2icPQcKeYzSR1bxsjBp8r1P59fuNzH2sbxlggktEFw7XdiBTwetfJbQV IwUj4AWaPpHfSPyjgbCkGt5SS5pm8Id4ayE7dvauDztqhx8PF3Vg0YARg+rbNiIHH+NSucl9rmP ZsXRI+Z/36A+u8DhGppjumGFBiXdjtTS/2kM8RUHfLYV4Aqjb8RR91RyLjYrYEa05sSOjPAXuXB XcmR7xsrO4ofcXg== X-Developer-Key: i=bartosz.golaszewski@oss.qualcomm.com; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 X-Proofpoint-GUID: aT8jTzEoo-LuusvKzBwjZPcn1qYPGptg X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjA2MDA5NiBTYWx0ZWRfX0BufYlpdpwUb 34AysxlqWFpx7hYVFLM67yvZGoouL/Xm9DptJyLlSshxxX+1eDAxs78PQTGaO4m9BuDssZHkOQ7 PkTf0o397qRrHquj1H1FbeM/6G6/c1oejPnQhlL44E3d8eiAHbKo0Gm9BAMUs1vvI+nQ+AhbVtp fBEZGWSXCOOPtpt411JeF5fOMfrw2LdNFbqBdG7ws0ePNhfZFgjBoZB+AJJMnIVUovSn+ouAuzh m+xU8+HAi2NlzCyoe4AwRthhQncXxRvkNQ2BxIXlsyXt9Uasripg62E3Iuri6lumTy7It+SIe/x yQFS5qbV84Sl7X4yAO15U58p7uaL2ShdjhPwN5Hqu4YR3P4OCsqj0gPbsrCjGXRQb7vt2Dqeo3c aXN5O0rCFpJRWITqFJvOFY2A5leWvQ== X-Proofpoint-ORIG-GUID: aT8jTzEoo-LuusvKzBwjZPcn1qYPGptg X-Authority-Analysis: v=2.4 cv=NsHcssdJ c=1 sm=1 tr=0 ts=69341989 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=OJCUNAs2RTwferbJ40Rlvg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=sRTBoas0Ks4LyZrZHwAA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-06_02,2025-12-04_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 clxscore=1015 phishscore=0 priorityscore=1501 malwarescore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2512060096 Here are a couple more fixes for shared GPIOs that I want to send before the end of the merge window. Signed-off-by: Bartosz Golaszewski --- Bartosz Golaszewski (4): gpio: shared: fix NULL-pointer dereference in teardown path gpio: shared: check if a reference is populated before cleaning its resources gpio: shared: fix auxiliary device cleanup order gpio: shared: make locking more fine-grained drivers/gpio/gpiolib-shared.c | 50 ++++++++++++++++++++++++++----------------- 1 file changed, 30 insertions(+), 20 deletions(-) --- base-commit: 057c46412cd90e432a73f650cdd75b56f755a082 change-id: 20251205-gpio-shared-teardown-fixes-d1e2429333c7 Best regards, -- Bartosz Golaszewski