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 88BEB3491E8; Tue, 16 Dec 2025 12:20:13 +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=1765887613; cv=none; b=fyjBrLP0ZL5+RsbjtDjNO+iloUgMG659CuX10mx7DqjBfIVBCQCw/jCRAw3QPjovrdjBlOjolDtBY6y1mkLibqSJHY0iB1vR6lvM4AWLuIt6UWrBfL+9vDMXwvMVc9GWsJq0HknUnuqx3VfGpRV0AsPOfqb2i79T/zZN0zUN6BY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765887613; c=relaxed/simple; bh=kZvw99Sk4PyskrjGBmMuwytjlLlvQDBKhA1fswpPaBI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GD07pKgkx2nv3WhGfRXE1dfSyiJM6ffWmnZXv6ToKKRFY1J/RILzGeDAVtweq1n2IDkCPZ156nbn7NgGjRU+MZoERs+YHkVQC4kuv6RnGLHYKPio9QXPJ9QpbbA40C2EJ2ixC11MiDxD4bMtJ2FeXMhrmZg97YRDNUHHQsM6n6c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=KPbZKKb4; 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="KPbZKKb4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0CE6BC4CEF1; Tue, 16 Dec 2025 12:20:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1765887613; bh=kZvw99Sk4PyskrjGBmMuwytjlLlvQDBKhA1fswpPaBI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KPbZKKb4qHmOjBQfNhUu0PyxI25DZfKZhYVl7arG36e/3wtrp3InqddoneKF6ST3K hZJkQZKImR+YhGEqwQhLztfdSv09M8JUZsh/h6CzC9ojdPBOn4efmYgKzIE2wXW+qY Jcm0GNZ2ySCDlKp9H6qO/n7NM1QoV3UEghPAzUkk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Praveen Talari , Konrad Dybcio , Bjorn Andersson , Sasha Levin Subject: [PATCH 6.18 285/614] arm64: dts: qcom: qrb2210-rb1: Fix UART3 wakeup IRQ storm Date: Tue, 16 Dec 2025 12:10:52 +0100 Message-ID: <20251216111411.698102848@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251216111401.280873349@linuxfoundation.org> References: <20251216111401.280873349@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Praveen Talari [ Upstream commit 9c92d36b0b1ea8b2a19dbe0416434f3491dbfaaf ] For BT use cases, pins are configured with pull-up state in sleep state to avoid noise. If IRQ type is configured as level high and the GPIO line is also in a high state, it causes continuous interrupt assertions leading to an IRQ storm when wakeup irq enables at system suspend/runtime suspend. Switching to edge-triggered interrupt (IRQ_TYPE_EDGE_FALLING) resolves this by only triggering on state transitions (high-to-low) rather than maintaining sensitivity to the static level state, effectively preventing the continuous interrupt condition and eliminating the wakeup IRQ storm. Fixes: 9380e0a1d449 ("arm64: dts: qcom: qrb2210-rb1: add Bluetooth support") Signed-off-by: Praveen Talari Reviewed-by: Konrad Dybcio Link: https://lore.kernel.org/r/20251110101043.2108414-2-praveen.talari@oss.qualcomm.com Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/qcom/qrb2210-rb1.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts index 67ba508e92ba1..3eedfb2cf4799 100644 --- a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts +++ b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts @@ -649,7 +649,7 @@ key_volp_n: key-volp-n-state { &uart3 { /delete-property/ interrupts; interrupts-extended = <&intc GIC_SPI 330 IRQ_TYPE_LEVEL_HIGH>, - <&tlmm 11 IRQ_TYPE_LEVEL_HIGH>; + <&tlmm 11 IRQ_TYPE_EDGE_FALLING>; pinctrl-0 = <&uart3_default>; pinctrl-1 = <&uart3_sleep>; pinctrl-names = "default", "sleep"; -- 2.51.0