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 E34783090F5; Mon, 13 Apr 2026 16:26:39 +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=1776097600; cv=none; b=JGTOF+PIkztrh+RkvjhnGyOZfRXmfpo/K6oYQGZv7dkBr5XNw1aBcsmhHWq0s6r/4guVr9lWSeNQeDrYnU1iDklHcUNXr5jLLw3Jg8uYCmHh3GZSc56YhkvPew6GMU4dxXb0qDjgNxXZazy5xrQGEAyxyX+RmxkGB2z3vVImXGk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776097600; c=relaxed/simple; bh=PKeBtB4fhEmyUeD2vl9DV55uSycDKk1W8+7H/XbzSgQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hRSkobgp7P1AxwLUTdDIxbTCJS2WZl7BFFif8ov6e4ZexwYAP6+ZLzuKTNlNkzoClHhIx8+K69USNNvmQ0klCmQK/Yqv3hBfUrqfnkl+FRchMKNaxT9evu/WIuQDh1bjmfxqETmyHROYcQ7PfUL/Ng3bOlcqCUtdhYkfu3Jo8Yg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=TvZk9E/i; 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="TvZk9E/i" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 798A6C2BCAF; Mon, 13 Apr 2026 16:26:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1776097599; bh=PKeBtB4fhEmyUeD2vl9DV55uSycDKk1W8+7H/XbzSgQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TvZk9E/iTq5wYSD+5IOJRU+E8+UorPKarGj6lUjAV7mWST+gNdj40lR34f76FL37a 5FlT9C0Aoo252Va/NW0hz0r15qZeLkCcDnQ+AszypRjYVENDBI6E6LhoDPpPnvH3bW +6jX4qnqIuGuhYWkpxlss8ZiVt3LnK+PYRxX7F/8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Adrian Hunter , Frank Li , Alexandre Belloni Subject: [PATCH 5.15 192/570] i3c: mipi-i3c-hci: Add missing TID field to no-op command descriptor Date: Mon, 13 Apr 2026 17:55:23 +0200 Message-ID: <20260413155837.651548935@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260413155830.386096114@linuxfoundation.org> References: <20260413155830.386096114@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Adrian Hunter commit ec3cfd835f7c4bbd23bc9ad909d2fdc772a578bb upstream. The internal control command descriptor used for no-op commands includes a Transaction ID (TID) field, but the no-op command constructed in hci_dma_dequeue_xfer() omitted it. As a result, the hardware receives a no-op descriptor without the expected TID. This bug has gone unnoticed because the TID is currently not validated in the no-op completion path, but the descriptor format requires it to be present. Add the missing TID field when generating a no-op descriptor so that its layout matches the defined command structure. Fixes: 9ad9a52cce282 ("i3c/master: introduce the mipi-i3c-hci driver") Cc: stable@vger.kernel.org Signed-off-by: Adrian Hunter Reviewed-by: Frank Li Link: https://patch.msgid.link/20260306072451.11131-10-adrian.hunter@intel.com Signed-off-by: Alexandre Belloni Signed-off-by: Greg Kroah-Hartman --- drivers/i3c/master/mipi-i3c-hci/cmd.h | 1 + drivers/i3c/master/mipi-i3c-hci/dma.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) --- a/drivers/i3c/master/mipi-i3c-hci/cmd.h +++ b/drivers/i3c/master/mipi-i3c-hci/cmd.h @@ -17,6 +17,7 @@ #define CMD_0_TOC W0_BIT_(31) #define CMD_0_ROC W0_BIT_(30) #define CMD_0_ATTR W0_MASK(2, 0) +#define CMD_0_TID W0_MASK(6, 3) /* * Response Descriptor Structure --- a/drivers/i3c/master/mipi-i3c-hci/dma.c +++ b/drivers/i3c/master/mipi-i3c-hci/dma.c @@ -473,7 +473,7 @@ static bool hci_dma_dequeue_xfer(struct u32 *ring_data = rh->xfer + rh->xfer_struct_sz * idx; /* store no-op cmd descriptor */ - *ring_data++ = FIELD_PREP(CMD_0_ATTR, 0x7); + *ring_data++ = FIELD_PREP(CMD_0_ATTR, 0x7) | FIELD_PREP(CMD_0_TID, xfer->cmd_tid); *ring_data++ = 0; if (hci->cmd == &mipi_i3c_hci_cmd_v2) { *ring_data++ = 0;