linux-kernel - [PATCH] dmaengine: xilinx_dma: Set dma

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250314134849.703819-1-thomas.gessler@brueckmann-gmbh.de>
Date: Fri, 14 Mar 2025 14:48:47 +0100
From: Thomas Gessler <thomas.gessler@...eckmann-gmbh.de>
To: dmaengine@...r.kernel.org
Cc: Thomas Gessler <thomas.gessler@...eckmann-gmbh.de>,
	Vinod Koul <vkoul@...nel.org>,
	Michal Simek <michal.simek@....com>,
	Marek Vasut <marex@...x.de>,
	Radhey Shyam Pandey <radhey.shyam.pandey@....com>,
	Uwe Kleine-König <u.kleine-koenig@...libre.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] dmaengine: xilinx_dma: Set dma_device directions

Coalesce the direction bits from the enabled TX and/or RX channels into
the directions bit mask of dma_device. Without this mask set,
dma_get_slave_caps() in the DMAEngine fails, which prevents the driver
from being used with an IIO DMAEngine buffer.

Signed-off-by: Thomas Gessler <thomas.gessler@...eckmann-gmbh.de>
---
 drivers/dma/xilinx/xilinx_dma.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index 108a7287f4cd..641aaf0c0f1c 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -3205,6 +3205,10 @@ static int xilinx_dma_probe(struct platform_device *pdev)
 		}
 	}
 
+	for (i = 0; i < xdev->dma_config->max_channels; i++)
+		if (xdev->chan[i])
+			xdev->common.directions |= xdev->chan[i]->direction;
+
 	if (xdev->dma_config->dmatype == XDMA_TYPE_VDMA) {
 		for (i = 0; i < xdev->dma_config->max_channels; i++)
 			if (xdev->chan[i])
-- 
2.43.0