From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794064133; b=dRXMlslnaV6rWnBesOr0N1mOkBsxCut6wxaZoLlC1DvL979GItxOxxAT3vpvbzYkR7sw zSCWMRn4klmc7jrpJkVLIl2lxokPh76uuKFkzJSJ3joGBzb8TX/essuiph7NnLFFaz209 wbNyRSgXBlAs3itiGD1GmpWL5+R5Db6rYBi7xd81mek0myU1TqtuMX5ByhmzdyZvMeWC/ 6PmveuoHpSWrGDsoVnwd+aT8nuwhpMWUXbKFN9Pq5AV6pxPEA5VoEf2CgViUoeDrfGqy1 UbTCvesTrRSAOJ8RtEMHWyAqqrumEXmL008CRGccxCTniChtcyOTNUAZBBL6JzDol9Q== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794064133; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=JrQpNco3kMuGNQtHYiBj9bT9iBvnUwQnIny6b0lgFQI=; b=z/NDw8HAa9hLeby5nRU1b3VoFbYbK011lNsAAUATODZRXAHsk3rvSW3kxv73+6tHb7wZ hMIUQgN7noioOuqmPl+EqFmiqiJqI/NVmMafqZ1PLV314VEYjJTwzN8ft4p2D4scjwhBG qAbdWFmZUGMQ6X/PSqWh4+Sl2VE2hZ4+cxUiG5XIr0+ESjioXahY8jvNy3iiGofTbczpH X9ot+FUYFUUNToKDt44Vh58xl84/sn9U2wBHdbsib14Gtd+nfiJAVB9drJT4NCuBGEH+Q UTRUucgJuJS+ojg4S2t7wcaWcv6eqsbMwII1v/g52ebBLYYPGWvMpCVBWnWyR67B+Rw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=1j7PjpuZ; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 10CA7606A33B; Sat, 7 Nov 2026 15:08:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=1j7PjpuZ Received: by smtp.kernel.org (Postfix) with ESMTPSA id B354D1F0089F; Sat, 7 Nov 2026 15:08:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794064132; bh=JrQpNco3kMuGNQtHYiBj9bT9iBvnUwQnIny6b0lgFQI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=1j7PjpuZT3EZzF/WJhOKwn3OCncn0YphjUymUWWgeG8YTVpOLtdV7FKm1XzxBTprl B4+DzBkFJJrV3dnGYuH8D21ol6axSpX9aHNxKe9aHgwKPzzSPL6e9VKC3mq8zQ+va3 f0KZcaA2YtQlOvH7KbkLZ9i0vpyfG/iKksfzxPzM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Heidelberg , Lee Jones , Sasha Levin Subject: [PATCH 7.3 0284/1257] mfd: wcd934x: set DMA mask on parent to silence "DMA mask not set" Date: Sat, 7 Nov 2026 08:43:00 -0500 Message-ID: <20261107134947.320242570@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134939.434104957@linuxfoundation.org> References: <20261107134939.434104957@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Heidelberg [ Upstream commit b296be1dc008fe3a536341afae01f66bb302e67f ] The wcd934x MFD parent (a slim_device) never initializes its dma_mask/coherent_dma_mask. When the DT-aware children pass through of_dma_configure() this triggers the "DMA mask not set" warning for each child. Cc: stable@vger.kernel.org Fixes: f959dcd6ddfd ("dma-direct: Fix potential NULL pointer dereference") Assisted-by: tencent:hy3 Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20260903-wcd-dma-v2-1-189cff560a28@ixit.cz Signed-off-by: Lee Jones Signed-off-by: Sasha Levin --- drivers/mfd/wcd934x.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mfd/wcd934x.c b/drivers/mfd/wcd934x.c index 3c3080e8c8cf7..7bea64fc09562 100644 --- a/drivers/mfd/wcd934x.c +++ b/drivers/mfd/wcd934x.c @@ -2,6 +2,7 @@ // Copyright (c) 2019, Linaro Limited #include +#include #include #include #include @@ -217,6 +218,11 @@ static int wcd934x_slim_probe(struct slim_device *sdev) struct gpio_desc *reset_gpio; int ret; + ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32)); + if (ret) + return dev_err_probe(dev, ret, + "Failed to set DMA mask\n"); + ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); if (!ddata) return -ENOMEM; -- 2.53.0