From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 61D12439345 for ; Mon, 20 Jul 2026 16:14:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784564087; cv=none; b=itfWl4E9BOk3bRFUwGRzGfUpWDCzyTZp/zI7IChc15LlmsMqLpVdps5cva9sU3CBQOe8ps8TUDFkFPB7HHQZF8GPuC3xgZn1ppF2Fn25fTPYkc3t8OfStz3Fhbnk4O/4jTL3IfPoDS4atfsiJ7ZxeP2iRHywo8rXVMUvpVbKgA8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784564087; c=relaxed/simple; bh=OfSU9yTzZkUoRM+wT433Cu9gLe/i4w0huLi6TYDzQVc=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=Re4pP1AOxyoEE6YKpuPujUvt+AFBtuCHjX3nthZcNiHZ5lK2qT4MgxCCChDTBGdlz5+QhKOsZjdqFAMpBEQA+SREPqfswVU0/sDMCrfJU+xvWMzIqrD5YRX5jfC0q5+dugbZCOHP7oTy6vV5QqQ3vCxrxD3AfIrbWrziDFoJDFU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=sQD/5F1s; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="sQD/5F1s" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1EAD51F00A3F; Mon, 20 Jul 2026 16:14:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784564063; bh=8YzqLRSEaDaBEpVPN5PLcZIwLYzbMd96hR1IOQb/YJ8=; h=Subject:To:Cc:From:Date; b=sQD/5F1s0ApsvDhmxkmha2cZ9jVnuDybIQEDmBt4ea+jrASKhOq9vRan8GTnnRsQ6 rvx1VJtLFe151P6I391aUjqBQcEg44zF4etVHXYkqNZcHyH27syMPxfHgBvFY6wYYQ fv9K0TTw8O/PRb7EEDOp4EpaOciOtHLACHEenhXQ= Subject: FAILED: patch "[PATCH] gpio: mt7621: avoid corruption of shared interrupt trigger" failed to apply to 6.6-stable tree To: sergio.paracuellos@gmail.com,bartosz.golaszewski@oss.qualcomm.com,sashiko-bot@kernel.org Cc: From: Date: Mon, 20 Jul 2026 18:11:38 +0200 Message-ID: <2026072038-unwelcome-pebbly-862d@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 1781172526d1092323af443fa03f00e6de560401 # git commit -s git send-email --to '' --in-reply-to '2026072038-unwelcome-pebbly-862d@gregkh' --subject-prefix 'PATCH 6.6.y' 'HEAD^..' Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 1781172526d1092323af443fa03f00e6de560401 Mon Sep 17 00:00:00 2001 From: Sergio Paracuellos Date: Fri, 26 Jun 2026 08:01:09 +0200 Subject: [PATCH] gpio: mt7621: avoid corruption of shared interrupt trigger state The bank-shared fields like 'rising' and 'falling' are modified using non-atomic read-modify-write operations. Since every gpio chip instance represents an entire bank of 32 pins, if 'mediatek_gpio_irq_type()' is called concurrently for different IRQs on the same bank a possible overwrite of each other's configuration is possible. Thus, protect this state with 'gpio_generic_lock_irqsave' lock in the same way it is handled in irp_chip 'mediatek_gpio_irq_mask()' and 'mediatek_gpio_irq_unmask()' callbacks. Cc: stable@vger.kernel.org Reported-by: Sashiko Fixes: 4ba9c3afda41 ("gpio: mt7621: Add a driver for MT7621") Signed-off-by: Sergio Paracuellos Link: https://patch.msgid.link/20260626060112.2498324-2-sergio.paracuellos@gmail.com Signed-off-by: Bartosz Golaszewski diff --git a/drivers/gpio/gpio-mt7621.c b/drivers/gpio/gpio-mt7621.c index a814885ccd5d..ceb99641baee 100644 --- a/drivers/gpio/gpio-mt7621.c +++ b/drivers/gpio/gpio-mt7621.c @@ -187,6 +187,8 @@ mediatek_gpio_irq_type(struct irq_data *d, unsigned int type) struct mtk_gc *rg = gpiochip_get_data(gc); u32 mask = BIT(mt7621_gpio_hwirq_to_offset(d->hwirq, rg)); + guard(gpio_generic_lock_irqsave)(&rg->chip); + if (type == IRQ_TYPE_PROBE) { if ((rg->rising | rg->falling | rg->hlevel | rg->llevel) & mask)