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Mon, 05 Jan 2026 07:05:17 -0800 (PST) Received: from brgl-qcom.home ([2a01:cb1d:dc:7e00:dd3b:c635:dd06:9574]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-47d6c08ef66sm57732685e9.10.2026.01.05.07.05.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Jan 2026 07:05:17 -0800 (PST) From: Bartosz Golaszewski To: Linus Walleij , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Bartosz Golaszewski Cc: linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski , stable@vger.kernel.org, Marek Szyprowski Subject: [PATCH] pinctrl: meson: mark the GPIO controller as sleeping Date: Mon, 5 Jan 2026 16:05:08 +0100 Message-ID: <20260105150509.56537-1-bartosz.golaszewski@oss.qualcomm.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTA1MDEzMiBTYWx0ZWRfXz8Gk3nVA4rsO i3/6huCDk0fucsiDExDPtMRnvLPXcncSGuwL8ZUW6OxGinongtSxzO0OaxV0HtZLucJQhqgFGpt iAjDr5LW8ElV0x4Ugib2lbOPBCUI5s84FKrA9hSx2i9IqHg4zDSyoepzjTu0RIpRbM/QI1ATNCL nlDJSUblOcY0Zhr4S9vlZcTPLzrRTT+U8Pc/rVlI8w/BwdsZHW2NMpL1EA+4KOZj9NRThAS+3Y3 OvYroCAkYclp17zcs46ToBHrm+9VHil6oLzmKbYjzhS2CPhsKfZj489Nin9bEGAK0c721BcCgtN 2/ySA41yf0djuqu5t4b5k7tfWUnk33obId+lFgmyX+Q1JZTFl521hJh7deH846EhZxZGpdTXDtY /Kiyw+prY6VTxBaBWnhEX+Ak1zwnTebLoHKgZx7NrMyCfbvHC0ZaBY88RcEkCntEkdghUZzItva uoG0Tz49tId9Oet/Crw== X-Proofpoint-ORIG-GUID: MUboGxEJ_Cz7fYNr_9AIohBZzYTKa4YX X-Authority-Analysis: v=2.4 cv=c4ymgB9l c=1 sm=1 tr=0 ts=695bd331 cx=c_pps a=JIY1xp/sjQ9K5JH4t62bdg==:117 a=xqWC_Br6kY4A:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VwQbUJbxAAAA:8 a=hD80L64hAAAA:8 a=EUspDBNiAAAA:8 a=z2IfzJB68yTmpBagawIA:9 a=tNoRWFLymzeba-QzToBc:22 X-Proofpoint-GUID: MUboGxEJ_Cz7fYNr_9AIohBZzYTKa4YX 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=2026-01-05_01,2026-01-05_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 suspectscore=0 adultscore=0 clxscore=1015 bulkscore=0 impostorscore=0 priorityscore=1501 phishscore=0 spamscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601050132 Content-Type: text/plain; charset="utf-8" The GPIO controller is configured as non-sleeping but it uses generic pinctrl helpers which use a mutex for synchronization. This can cause the following lockdep splat with shared GPIOs enabled on boards which have multiple devices using the same GPIO: BUG: sleeping function called from invalid context at kernel/locking/mutex.c:591 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 142, name: kworker/u25:3 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. irq event stamp: 46379 hardirqs last enabled at (46379): [] _raw_spin_unlock_irqrestore+0x74/0x78 hardirqs last disabled at (46378): [] _raw_spin_lock_irqsave+0x84/0x88 softirqs last enabled at (46330): [] handle_softirqs+0x4c4/0x4dc softirqs last disabled at (46295): [] __do_softirq+0x14/0x20 CPU: 1 UID: 0 PID: 142 Comm: kworker/u25:3 Tainted: G C 6.19.0-rc4-next-20260105+ #11963 PREEMPT Tainted: [C]=3DCRAP Hardware name: Khadas VIM3 (DT) Workqueue: events_unbound deferred_probe_work_func Call trace: show_stack+0x18/0x24 (C) dump_stack_lvl+0x90/0xd0 dump_stack+0x18/0x24 __might_resched+0x144/0x248 __might_sleep+0x48/0x98 __mutex_lock+0x5c/0x894 mutex_lock_nested+0x24/0x30 pinctrl_get_device_gpio_range+0x44/0x128 pinctrl_gpio_set_config+0x40/0xdc gpiochip_generic_config+0x28/0x3c gpio_do_set_config+0xa8/0x194 gpiod_set_config+0x34/0xfc gpio_shared_proxy_set_config+0x6c/0xfc [gpio_shared_proxy] gpio_do_set_config+0xa8/0x194 gpiod_set_transitory+0x4c/0xf0 gpiod_configure_flags+0xa4/0x480 gpiod_find_and_request+0x1a0/0x574 gpiod_get_index+0x58/0x84 devm_gpiod_get_index+0x20/0xb4 devm_gpiod_get+0x18/0x24 mmc_pwrseq_emmc_probe+0x40/0xb8 platform_probe+0x5c/0xac really_probe+0xbc/0x298 __driver_probe_device+0x78/0x12c driver_probe_device+0xdc/0x164 __device_attach_driver+0xb8/0x138 bus_for_each_drv+0x80/0xdc __device_attach+0xa8/0x1b0 Fixes: 6ac730951104 ("pinctrl: add driver for Amlogic Meson SoCs") Cc: stable@vger.kernel.org Reported-by: Marek Szyprowski Closes: https://lore.kernel.org/all/00107523-7737-4b92-a785-14ce4e93b8cb@sa= msung.com/ Signed-off-by: Bartosz Golaszewski Reviewed-by: Martin Blumenstingl Reviewed-by: Neil Armstrong --- drivers/pinctrl/meson/pinctrl-meson.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/= pinctrl-meson.c index 18295b15ecd9..4507dc8b5563 100644 --- a/drivers/pinctrl/meson/pinctrl-meson.c +++ b/drivers/pinctrl/meson/pinctrl-meson.c @@ -619,7 +619,7 @@ static int meson_gpiolib_register(struct meson_pinctrl = *pc) pc->chip.set =3D meson_gpio_set; pc->chip.base =3D -1; pc->chip.ngpio =3D pc->data->num_pins; - pc->chip.can_sleep =3D false; + pc->chip.can_sleep =3D true; =20 ret =3D gpiochip_add_data(&pc->chip, pc); if (ret) { --=20 2.47.3