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 90D3337F8A0; Mon, 23 Mar 2026 14:18:54 +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=1774275534; cv=none; b=TJHGR7iSx658lY8wzpkHgQe0edychz+yMo2Jx6pmrcGB4VvMQMunYvE0dpJ4BcS6QjGTCJdh1Dbxp9oG+ZVlBY90zCfBTIrwfiTK2Ng0yjV+RZ3Kl78S9IAGlEPyqXvYUDyhS8gouTIVrfI5qE/pxrTwlrHWMiGlHAnugt30O0s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774275534; c=relaxed/simple; bh=GhauMfbF2bKgyWoME98GNhxRU2NgENRYTJ5q8UoqNj0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IC+xQPA2SHZ04zKU3sp4YOX1wDR1v0h1UXNwbvAB9cIMkJYUlHdFWTubfeEs5dSw5TXoy4bfHVckhg/Fh+Ju9ptC46VkDeIDqs4Ko9r8lKfgA9sSsVyqy1dzAiM+Z5oBAF6PD4MHl43v1198j6/s+f2rdCFgLc6BbIMtuY6pgDo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=NFNi6SCt; 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="NFNi6SCt" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BD1F7C4CEF7; Mon, 23 Mar 2026 14:18:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774275534; bh=GhauMfbF2bKgyWoME98GNhxRU2NgENRYTJ5q8UoqNj0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NFNi6SCt3zr8d+QSYslc+mv/g5G+CcPuncQ5nP+wZmS3VA///Y3tjI82jUL80t9CX sbwS2IZp0MtPXN+ps4JJjdLvfC6+5Q00Gg4q9BsQ0tgBp0prrPQsxU4XmTw0BlLBko 3dGJB0dgIwcEjG6MmYMW8xI49HzGwpCi9iPPhvm0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Adrian Ng Ho Yin , Frank Li , Alexandre Belloni , Sasha Levin Subject: [PATCH 6.12 134/460] i3c: dw-i3c-master: Set SIR_REJECT in DAT on device attach and reattach Date: Mon, 23 Mar 2026 14:42:10 +0100 Message-ID: <20260323134529.895455575@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134526.647552166@linuxfoundation.org> References: <20260323134526.647552166@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 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Adrian Ng Ho Yin [ Upstream commit f311a05784634febd299f03476b80f3f18489767 ] The DesignWare I3C master controller ACKs IBIs as soon as a valid Device Address Table (DAT) entry is present. This can create a race between device attachment (after DAA) and the point where the client driver enables IBIs via i3c_device_enable_ibi(). Set DEV_ADDR_TABLE_SIR_REJECT in the DAT entry during attach_i3c_dev() and reattach_i3c_dev() so that IBIs are rejected by default. The bit is managed thereafter by the existing dw_i3c_master_set_sir_enabled() function, which clears it in enable_ibi() after ENEC is issued, and restores it in disable_ibi() after DISEC. Fixes: 1dd728f5d4d4 ("i3c: master: Add driver for Synopsys DesignWare IP") Signed-off-by: Adrian Ng Ho Yin Reviewed-by: Frank Li Link: https://patch.msgid.link/53f5b8cbdd8af789ec38b95b02873f32f9182dd6.1770962368.git.adrianhoyin.ng@altera.com Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin --- drivers/i3c/master/dw-i3c-master.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c index 4c019c746f231..e0853a6bde0a4 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -1013,7 +1013,7 @@ static int dw_i3c_master_reattach_i3c_dev(struct i3c_dev_desc *dev, master->free_pos &= ~BIT(pos); } - writel(DEV_ADDR_TABLE_DYNAMIC_ADDR(dev->info.dyn_addr), + writel(DEV_ADDR_TABLE_DYNAMIC_ADDR(dev->info.dyn_addr) | DEV_ADDR_TABLE_SIR_REJECT, master->regs + DEV_ADDR_TABLE_LOC(master->datstartaddr, data->index)); @@ -1042,7 +1042,7 @@ static int dw_i3c_master_attach_i3c_dev(struct i3c_dev_desc *dev) master->free_pos &= ~BIT(pos); i3c_dev_set_master_data(dev, data); - writel(DEV_ADDR_TABLE_DYNAMIC_ADDR(master->devs[pos].addr), + writel(DEV_ADDR_TABLE_DYNAMIC_ADDR(master->devs[pos].addr) | DEV_ADDR_TABLE_SIR_REJECT, master->regs + DEV_ADDR_TABLE_LOC(master->datstartaddr, data->index)); -- 2.51.0