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 DAAB343C079 for ; Mon, 20 Jul 2026 16:14:33 +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=1784564097; cv=none; b=Y9HajI2BRW+N+BmOun2LRWkcvr+MPwHUT3ryeCrho+wnN3bStdy57X90oIl05TMEjgb2e0aLpLwgBdzG4txDnPnTiA79vs2kcF5uc0bbNhn5YM1auc3lggOgZY587LxFLEA8j/UwYsAxRbF6fYTZZlAhdFfDGmK+ngSUu6Q6DNw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784564097; c=relaxed/simple; bh=D7CIYEbZZHHjn53Kb+TqqcrqFccJSt/dGYEFccOJc/0=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=T2uFTlA9IkoCZ+FSa/Thtrhc+WYNVH3PxKGB00XfP1JLkDWgaf5Di6kRoufVjyT4UYX+OorenMUKPr0Fe4jEJGzvxfK9GUS4VrIkbeP5fN6vFyfrGdqS/oXiUniXYSHgTNNcti3uvJRDfsw8yooCtnSGtzxAOGqwftdQPsKJZOw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=wMBHeRl3; 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="wMBHeRl3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5F0101F00ACF; Mon, 20 Jul 2026 16:14:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784564068; bh=Hxs3xvIMxZ/wTMdmiSbiJ/qXYXCig3T8TNlZ67EbR5w=; h=Subject:To:Cc:From:Date; b=wMBHeRl3WJq1ky00gghbGlGZqLmOQOc0JhbAb4h5+15/WEmNQLNdj8wlFxrEHJAj8 Felby5iG7VcUOqDVNuYtI/tvekA3OGHJqY+g/sy0EmX4UIkk4RkNJoA4n5eAxN6sjG 08cYEmMkTuUDqgTTW4j1X4eAKKfqhghlObrUVwIU= Subject: FAILED: patch "[PATCH] gpio: mt7621: avoid corruption of shared interrupt trigger" failed to apply to 5.15-stable tree To: sergio.paracuellos@gmail.com,bartosz.golaszewski@oss.qualcomm.com,sashiko-bot@kernel.org Cc: From: Date: Mon, 20 Jul 2026 18:11:39 +0200 Message-ID: <2026072039-grip-phony-0a5a@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 5.15-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-5.15.y git checkout FETCH_HEAD git cherry-pick -x 1781172526d1092323af443fa03f00e6de560401 # git commit -s git send-email --to '' --in-reply-to '2026072039-grip-phony-0a5a@gregkh' --subject-prefix 'PATCH 5.15.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)