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 7A5B43246F8; Tue, 17 Mar 2026 17:18:51 +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=1773767931; cv=none; b=uYYP3yPFBobwz5VfplUKXbMCBtARSe05k/7fObWJASkFqvOBwmoP5Y8vWr2oeZ2olYi74Wq2yffPR1OtSwJAAY4+ptys11Hgrk1b/XCZb2puQoqlaYH/+2/nXqkmckjBG/XA6Vp56abll3s02YZ4DkhQ0yVBezRj7j7lS16iJ14= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773767931; c=relaxed/simple; bh=usv8McoHmnnnP7PSJ0MNiLBSJNowkF9Fj45X0Zq+9To=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=aQ8eH6uMVpEqZ/TUXN2md6AUhApRy2yOqTzBZlEdufyJrflofMcFTUTvnBujTjWGuFSkUHUMCvHuod2MGGq7kkShpa5ceBI+xZB683jPB1yql1jdc6qR6h61uPdCNPY0t9Pu3r7GnJ3F5ztRPvh3YN7YnwkKpuq+vBkq925qLnk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LZt1l0l2; 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="LZt1l0l2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A0F76C4CEF7; Tue, 17 Mar 2026 17:18:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1773767931; bh=usv8McoHmnnnP7PSJ0MNiLBSJNowkF9Fj45X0Zq+9To=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LZt1l0l2nspYwFoV1nVaFx5zS2J6KkyeXyejfGMaN88A+EyfUFlz1f+mcMgVXa5m2 a2O9sp7MXyFF9+oaPeXlqZwzWvr8DtSLweZS/RTl8/58V7zAc2pj1bflZEzM7Lvxie WrZxM2Z1gS4FkrIGF2nmXu+St5JT13cFOOQQtExc= 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 6.18 175/333] i3c: dw-i3c-master: Set SIR_REJECT in DAT on device attach and reattach Date: Tue, 17 Mar 2026 17:33:24 +0100 Message-ID: <20260317163005.846454275@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260317162959.345812316@linuxfoundation.org> References: <20260317162959.345812316@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: 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 c06595cb74010..41ddac1d49d5e 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -1005,7 +1005,7 @@ 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)); @@ -1034,7 +1034,7 @@ 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