From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C384B29ACDD; Thu, 15 Jan 2026 17:00:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768496451; cv=none; b=Qa6gpBN5SD35QJj1otQcBrhdbbtonEfVihZvSH39foGFQieJb1GMW0k/q8waIVa4lc4P27VcevYWh0LRBfRq8H72p5LfOFFUMekt79Antd4zr+FgnYZ7Whx6Kv0Qhwz93nQHr81/z+uGq5h8LhJu9hZr1MXJS01djHIDmc8Jzpk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768496451; c=relaxed/simple; bh=h87IpPUZQHkhPhJf4m+hskmi4naG/4Ml2ZrtCb8qqiY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uNIM37W2Qrs9a0FHw+wBREGBtWuAkJXYGLLIM/eiSgkA/B40YCuW20TyutXgUcJkLsaCG/Q+3/Gyq+8+Q+7RuJMeGjYBFSCjAXcAbfJM9oqHwN3FsLBUo/tga6jkt4Ko4P+X9V6LPJZ0hAHdPwS8z0aRWS0YVcRLBvaNfZY5k3I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=qAFiUOlW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="qAFiUOlW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4F9BCC116D0; Thu, 15 Jan 2026 17:00:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1768496451; bh=h87IpPUZQHkhPhJf4m+hskmi4naG/4Ml2ZrtCb8qqiY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qAFiUOlWRYTLsPbpJvetkT9sRxxV7PNnA7za7RXhE44R1wrG2AAhwwj8StJ0WT5KS uQJr2kxtvAigWXkWUR8husn+095e75Qa0Zue04q3On+J2+ILE/3plv+jc+b+u592uI fYoafpGvFOQZa50wNYN8xqqboHeE/dIgbiAmoDKw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Marek Szyprowski , Heiko Stuebner , Bartosz Golaszewski Subject: [PATCH 6.12 018/119] gpio: rockchip: mark the GPIO controller as sleeping Date: Thu, 15 Jan 2026 17:47:13 +0100 Message-ID: <20260115164152.619430175@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260115164151.948839306@linuxfoundation.org> References: <20260115164151.948839306@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bartosz Golaszewski commit 20cf2aed89ac6d78a0122e31c875228e15247194 upstream. 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: 12, name: kworker/u16:0 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 6 locks held by kworker/u16:0/12: #0: ffff0001f0018d48 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x18c/0x604 #1: ffff8000842dbdf0 (deferred_probe_work){+.+.}-{0:0}, at: process_one_work+0x1b4/0x604 #2: ffff0001f18498f8 (&dev->mutex){....}-{4:4}, at: __device_attach+0x38/0x1b0 #3: ffff0001f75f1e90 (&gdev->srcu){.+.?}-{0:0}, at: gpiod_direction_output_raw_commit+0x0/0x360 #4: ffff0001f46e3db8 (&shared_desc->spinlock){....}-{3:3}, at: gpio_shared_proxy_direction_output+0xd0/0x144 [gpio_shared_proxy] #5: ffff0001f180ee90 (&gdev->srcu){.+.?}-{0:0}, at: gpiod_direction_output_raw_commit+0x0/0x360 irq event stamp: 81450 hardirqs last enabled at (81449): [] _raw_spin_unlock_irqrestore+0x74/0x78 hardirqs last disabled at (81450): [] _raw_spin_lock_irqsave+0x84/0x88 softirqs last enabled at (79616): [] __alloc_skb+0x17c/0x1e8 softirqs last disabled at (79614): [] __alloc_skb+0x17c/0x1e8 CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.19.0-rc4-next-20260105+ #11975 PREEMPT Hardware name: Hardkernel ODROID-M1 (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_direction+0x3c/0xe0 pinctrl_gpio_direction_output+0x14/0x20 rockchip_gpio_direction_output+0xb8/0x19c gpiochip_direction_output+0x38/0x94 gpiod_direction_output_raw_commit+0x1d8/0x360 gpiod_direction_output_nonotify+0x7c/0x230 gpiod_direction_output+0x34/0xf8 gpio_shared_proxy_direction_output+0xec/0x144 [gpio_shared_proxy] gpiochip_direction_output+0x38/0x94 gpiod_direction_output_raw_commit+0x1d8/0x360 gpiod_direction_output_nonotify+0x7c/0x230 gpiod_configure_flags+0xbc/0x480 gpiod_find_and_request+0x1a0/0x574 gpiod_get_index+0x58/0x84 devm_gpiod_get_index+0x20/0xb4 devm_gpiod_get_optional+0x18/0x30 rockchip_pcie_probe+0x98/0x380 platform_probe+0x5c/0xac really_probe+0xbc/0x298 Fixes: 936ee2675eee ("gpio/rockchip: add driver for rockchip gpio") Cc: stable@vger.kernel.org Reported-by: Marek Szyprowski Closes: https://lore.kernel.org/all/d035fc29-3b03-4cd6-b8ec-001f93540bc6@samsung.com/ Acked-by: Heiko Stuebner Link: https://lore.kernel.org/r/20260106090011.21603-1-bartosz.golaszewski@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski Signed-off-by: Greg Kroah-Hartman --- drivers/gpio/gpio-rockchip.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpio/gpio-rockchip.c +++ b/drivers/gpio/gpio-rockchip.c @@ -584,6 +584,7 @@ static int rockchip_gpiolib_register(str gc->ngpio = bank->nr_pins; gc->label = bank->name; gc->parent = bank->dev; + gc->can_sleep = true; ret = gpiochip_add_data(gc, bank); if (ret) {