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 974EB2E1C7C; Tue, 31 Mar 2026 17:06:21 +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=1774976781; cv=none; b=TdwgtWOS6DjatphKfEs8uAdHh5hyv1VKV6jmzhXLcD/HLqtMgVOI2xon+5+WRDFYQ4Wj4/sD0DTvLvpqI+ndijyg0kqKt40X+JZ2aS0gaWhuFzILrXRl+LPJDn+GTSLGzA2Z/hQ7DnqfsckvCH9aGVX/jc83hOqRWMx9XU7hX8k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774976781; c=relaxed/simple; bh=0TGEKUjQMankHGzkNovr3bvUzg9Wmthmy7Kx1TbNuPw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lEu5L+OOmuS2xbdkYPUOWIFsLTN22BaUvL3WHzZfm6S4qivL2gdAPo8GG3txAT8f1pIXsMLTWgqW8fVR3yFpLE72o8B2Rpv3uUO69QwpOEhghwikui+5P383fufFNM6mLheYChquvjL1QW3nZn4yUYk/GYux7NgdeRVRo6JYzyI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=QOTVIro0; 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="QOTVIro0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2CDDAC19423; Tue, 31 Mar 2026 17:06:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774976781; bh=0TGEKUjQMankHGzkNovr3bvUzg9Wmthmy7Kx1TbNuPw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QOTVIro0zJ8ZVzE/gZDUbg+wSY2wQ0oC/T7zXrY/njhN1AjlwCSyj+6XjXjEDdKUB AkYcdmwuxigufwBetZJ5Y0g3yiZhiO84/8YAGGOBOkLF9EuZKsLRnqEobNmdydmGcD ET8B0aX0ACQ0LUiH+s+JqZ8Kq4ZVI/3ZE3JfHFXc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jassi Brar , Thomas Gleixner , Douglas Anderson Subject: [PATCH 6.18 225/309] irqchip/qcom-mpm: Add missing mailbox TX done acknowledgment Date: Tue, 31 Mar 2026 18:22:08 +0200 Message-ID: <20260331161801.729423429@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260331161753.468533260@linuxfoundation.org> References: <20260331161753.468533260@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 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jassi Brar commit cfe02147e86307a17057ee4e3604f5f5919571d2 upstream. The mbox_client for qcom-mpm sends NULL doorbell messages via mbox_send_message() but never signals TX completion. Set knows_txdone=true and call mbox_client_txdone() after a successful send, matching the pattern used by other Qualcomm mailbox clients (smp2p, smsm, qcom_aoss etc). Fixes: a6199bb514d8a6 "irqchip: Add Qualcomm MPM controller driver" Signed-off-by: Jassi Brar Signed-off-by: Thomas Gleixner Reviewed-by: Douglas Anderson Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260322171533.608436-1-jassisinghbrar@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/irqchip/irq-qcom-mpm.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/irqchip/irq-qcom-mpm.c +++ b/drivers/irqchip/irq-qcom-mpm.c @@ -306,6 +306,8 @@ static int mpm_pd_power_off(struct gener if (ret < 0) return ret; + mbox_client_txdone(priv->mbox_chan, 0); + return 0; } @@ -434,6 +436,7 @@ static int qcom_mpm_probe(struct platfor } priv->mbox_client.dev = dev; + priv->mbox_client.knows_txdone = true; priv->mbox_chan = mbox_request_channel(&priv->mbox_client, 0); if (IS_ERR(priv->mbox_chan)) { ret = PTR_ERR(priv->mbox_chan);