linux-kernel - [PATCH v3 1/2] DW DMAC: enable memory-to-memory transfers support

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

Message-Id: <1479496356-27834-2-git-send-email-Eugeniy.Paltsev@synopsys.com>
Date:   Fri, 18 Nov 2016 22:12:35 +0300
From:   Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
To:     devicetree@...r.kernel.org
Cc:     robh+dt@...nel.org, mark.rutland@....com,
        linux-kernel@...r.kernel.org, andriy.shevchenko@...ux.intel.com,
        vinod.koul@...el.com, dmaengine@...r.kernel.org,
        linux-snps-arc@...ts.infradead.org,
        Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
Subject: [PATCH v3 1/2] DW DMAC: enable memory-to-memory transfers support

All known devices, which use DT for configuration, support
memory-to-memory transfers. So enable it by default, if we read
configuration from DT.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
---
 drivers/dma/dw/platform.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index 5bda0eb..aa7a5c1 100644
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c
@@ -129,6 +129,12 @@ dw_dma_parse_dt(struct platform_device *pdev)
 	if (of_property_read_bool(np, "is_private"))
 		pdata->is_private = true;
 
+	/*
+	 * All known devices, which use DT for configuration, support
+	 * memory-to-memory transfers. So enable it by default.
+	 */
+	pdata->is_memcpy = true;
+
 	if (!of_property_read_u32(np, "chan_allocation_order", &tmp))
 		pdata->chan_allocation_order = (unsigned char)tmp;
 
-- 
2.5.5