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 8122F158D76; Mon, 22 Apr 2024 23:54:42 +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=1713830082; cv=none; b=q682eFPDbKvOP0cuIHHBc8LjhaGAmfO19J3dahu+OHUqmbCWyX6CEE5B9RV+sqSPUobVGFcp/Ht1MqGbsXR3CTrxsZBgAAKWwPOP+761aiEz8isZpd2G/I/4p2N4eMKQuxhq+p/YcMLCqyRJDYP8Ub60pOiqMA1+7qejNVh8f3Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713830082; c=relaxed/simple; bh=GEpnhiSTG1TbEnLT97kCT5VbQj9dur5yP9sjIze/XLU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LxEyubvh9wpABIl/mCNk1/E9r2/rQWwsgsQvYROee87wh07aTGmXKqKJBSIZSdIDTlNqMucPjOyD/ztBefxFU3a8Fdwvu2QC2Qz8yW0fATCRByAbmK3SUsjoshoXiMrtm9WheOxJoDdoTOdqTs2L1jcW8qW2GZRx8Zvhg85ZLMg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gIC0kYq8; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gIC0kYq8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D7861C113CC; Mon, 22 Apr 2024 23:54:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713830082; bh=GEpnhiSTG1TbEnLT97kCT5VbQj9dur5yP9sjIze/XLU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gIC0kYq8VfIdk7oXV+VB+pvqt9XPP8u+rUOfM5A74gp5RWcKw+7kOSWhqF59W0sse I9K0dgntbrzXTPRBmaee6yBsf/j4e2G4KiXFbOeuW0d7HQjr+S7kUwOuhkwidKdcKy x5+46PqKFBKlnSAVxc6tnPznPEM2ZGHl+LPYtu/pjF96p8xMXhqXc/jaUdtfYeJEvn 2kk7YSPz3I+geZ/aM/FyhFoDdv7fC2UYKuSpaG6S46nQ8WvolK+vKDBiAzPi7l+Lgp 0V3MQGirdgkar/Oe7g7WAh3OKcx6su3lUel7y3JomlCSz+x9M00o2Va+JepIj9FtH/ v2VCAfR8o2YoQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Thierry Reding , Jon Hunter , Sasha Levin , thierry.reding@gmail.com, mperttunen@nvidia.com, airlied@gmail.com, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org Subject: [PATCH AUTOSEL 6.8 21/43] gpu: host1x: Do not setup DMA for virtual devices Date: Mon, 22 Apr 2024 19:14:07 -0400 Message-ID: <20240422231521.1592991-21-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240422231521.1592991-1-sashal@kernel.org> References: <20240422231521.1592991-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.8.7 Content-Transfer-Encoding: 8bit From: Thierry Reding [ Upstream commit 8ab58f6841b19423231c5db3378691ec80c778f8 ] The host1x devices are virtual compound devices and do not perform DMA accesses themselves, so they do not need to be set up for DMA. Ideally we would also not need to set up DMA masks for the virtual devices, but we currently still need those for legacy support on old hardware. Tested-by: Jon Hunter Acked-by: Jon Hunter Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20240314154943.2487549-1-thierry.reding@gmail.com Signed-off-by: Sasha Levin --- drivers/gpu/host1x/bus.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c index 84d042796d2e6..3937889fa912d 100644 --- a/drivers/gpu/host1x/bus.c +++ b/drivers/gpu/host1x/bus.c @@ -351,11 +351,6 @@ static int host1x_device_uevent(const struct device *dev, return 0; } -static int host1x_dma_configure(struct device *dev) -{ - return of_dma_configure(dev, dev->of_node, true); -} - static const struct dev_pm_ops host1x_device_pm_ops = { .suspend = pm_generic_suspend, .resume = pm_generic_resume, @@ -369,7 +364,6 @@ struct bus_type host1x_bus_type = { .name = "host1x", .match = host1x_device_match, .uevent = host1x_device_uevent, - .dma_configure = host1x_dma_configure, .pm = &host1x_device_pm_ops, }; @@ -458,8 +452,6 @@ static int host1x_device_add(struct host1x *host1x, device->dev.bus = &host1x_bus_type; device->dev.parent = host1x->dev; - of_dma_configure(&device->dev, host1x->dev->of_node, true); - device->dev.dma_parms = &device->dma_parms; dma_set_max_seg_size(&device->dev, UINT_MAX); -- 2.43.0