From nobody Fri Feb 13 16:38:25 2026 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 D12FA29422 for ; Fri, 24 May 2024 09:25:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716542758; cv=none; b=ol4Rv8Cvz8fXrvPDA6K3pIG98RrsyR57QfFkk0oTWC24k3IJb7PAjPO47vPJoMJxPMUhKc3CV14kKvcQmGgJNfm4kvpd3OVYRz1aMJR5UGxs/yXqYSLhkXR+V70P8qNOKRRfcXQ0tW8qK4Rxmxi8klQwgcdJpgZZ0cOgKsOFx7c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716542758; c=relaxed/simple; bh=yn0UIRDXb/4FFzQvGAAS9y46o7z9CqbIGH2x0hW+WCw=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version:Content-Type; b=dJzXcTTpRePejV9gU1WQrKW6nNuyqQWDJfKxt1dQKr2/1d3+OwVxlBCuQJLEqJYyw5G9zXKzARLRghGNC9dn2cyGQzHWVtSVZR7yFvdOq1bWXF77/XhOilfOHKQblpNjbjauVyFJYQj8NVqIuUeZKLVfKUnbIEOLMxgyeMQVjrY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from dude04.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::ac]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1sARBB-0007SY-J8; Fri, 24 May 2024 11:25:37 +0200 From: =?UTF-8?q?Sven=20P=C3=BCschel?= To: hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, Michael Tretter , =?UTF-8?q?Sven=20P=C3=BCschel?= Subject: [PATCH] drm/rockchip: Set DMA max segment size Date: Fri, 24 May 2024 11:23:59 +0200 Message-Id: <20240524092400.2019587-1-s.pueschel@pengutronix.de> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:1101:1d::ac X-SA-Exim-Mail-From: s.pueschel@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org From: Michael Tretter There is no reason to limit the DMA max segment size for the Rockchip VOP and VOP2. Set it to the maximum. This prevents the following warning when DMA API debugging is enabled with CONFIG_DMA_API_DEBUG_SG=3Dy: DMA-API: rockchip-drm display-subsystem: mapping sg segment longer than de= vice claims to support [len=3D208896] [max=3D65536] Signed-off-by: Michael Tretter Signed-off-by: Sven P=C3=BCschel --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/= rockchip/rockchip_drm_drv.c index ab55d7132550..0f93efd1a8fa 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -67,6 +67,8 @@ int rockchip_drm_dma_attach_device(struct drm_device *drm= _dev, } } =20 + dma_set_max_seg_size(drm_dev->dev, UINT_MAX); + ret =3D iommu_attach_device(private->domain, dev); if (ret) { DRM_DEV_ERROR(dev, "Failed to attach iommu device\n"); base-commit: 39bc27bd688066a63e56f7f64ad34fae03fbe3b8 --=20 2.39.2