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 55A173446D1; Tue, 16 Dec 2025 12:19:36 +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=1765887576; cv=none; b=n+mvx8++M1W25mVksznUy+8aWKy8LCq1lR47OmdfaxbRqEW6h9IQXuJqyZS2vjfRxeN0WPLE9dedEbfWKPcuAUzkV4HXJBOK61AWjUUDQqQwqChwhbmvaHvz45Pnhnv4rap2Xa4cUAOM2tc5ar/VFKtjBYrQ8rezXVJq5jRgX6s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765887576; c=relaxed/simple; bh=qJGu0YMvNSbupV8QJ0nc+8rQelXbZJFcMpoQ4JTWcrw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dRvt3g4LzP7vMQ64zFcVStjch1l3QPO8pn9YDQkMEVezXNBkveCrlQjg36Ram70Mn0xGft796xxHMpoBpmi7+M1bHlRav4xYqAdPVRkLWPkQm1NNNiD+pIDvNHcK4Lb0YKHBYskP57k9OqHgfLfNYoJHXrLN2nujcs77gY6Ugw4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=tIW6bKEc; 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="tIW6bKEc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B6D7BC4CEF1; Tue, 16 Dec 2025 12:19:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1765887576; bh=qJGu0YMvNSbupV8QJ0nc+8rQelXbZJFcMpoQ4JTWcrw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tIW6bKEcu3oyV10XD4CdPzigjzGltuEzcVeUOrso+KoTbiafZoDbajiLN2rxwhvIX BNQOUrRD+IQHMk1Fbd+aat+c/J8ImObnVBHHSyHzMnCVyecqAyLbhvVaXQokH0I/uu Y4drXX1g3xBFWZs7TVxd/6UOf9rKtSnH2HvkEsFg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Maciej Falkowski , Lizhi Hou , Sasha Levin Subject: [PATCH 6.18 271/614] accel/amdxdna: Clear mailbox interrupt register during channel creation Date: Tue, 16 Dec 2025 12:10:38 +0100 Message-ID: <20251216111411.194227164@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: Lizhi Hou [ Upstream commit 6ff9385c07aa311f01f87307e6256231be7d8675 ] The mailbox interrupt register is not always cleared when a mailbox channel is created. This can leave stale interrupt states from previous operations. Fix this by explicitly clearing the interrupt register in the mailbox channel creation function. Fixes: b87f920b9344 ("accel/amdxdna: Support hardware mailbox") Reviewed-by: Maciej Falkowski Signed-off-by: Lizhi Hou Link: https://patch.msgid.link/20251107181115.1293158-1-lizhi.hou@amd.com Signed-off-by: Sasha Levin --- drivers/accel/amdxdna/amdxdna_mailbox.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/accel/amdxdna/amdxdna_mailbox.c b/drivers/accel/amdxdna/amdxdna_mailbox.c index da1ac89bb78f1..6634a4d5717ff 100644 --- a/drivers/accel/amdxdna/amdxdna_mailbox.c +++ b/drivers/accel/amdxdna/amdxdna_mailbox.c @@ -513,6 +513,7 @@ xdna_mailbox_create_channel(struct mailbox *mb, } mb_chann->bad_state = false; + mailbox_reg_write(mb_chann, mb_chann->iohub_int_addr, 0); MB_DBG(mb_chann, "Mailbox channel created (irq: %d)", mb_chann->msix_irq); return mb_chann; -- 2.51.0