From: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
To: Mans Rullgard <mans@mansr.com>, Vinod Koul <vinod.koul@intel.com>
Cc: <dmaengine@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>,
Sebastian Frias <sf84@laposte.net>, Mason <slash.tmp@free.fr>,
Thibaud Cornic <thibaud_cornic@sigmadesigns.com>
Subject: [PATCH 6/6] Relax write accesses
Date: Wed, 23 Nov 2016 17:56:41 +0100 [thread overview]
Message-ID: <5835CA49.1010907@sigmadesigns.com> (raw)
In-Reply-To: <5835C84A.6000706@sigmadesigns.com>
---
drivers/dma/tango-dma.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/dma/tango-dma.c b/drivers/dma/tango-dma.c
index 24e124942a2f..7049b7c3c0db 100644
--- a/drivers/dma/tango-dma.c
+++ b/drivers/dma/tango-dma.c
@@ -153,11 +153,9 @@ static void tangox_dma_pchan_detach(struct tangox_dma_pchan *pchan)
static int tangox_dma_issue_single(struct tangox_dma_pchan *pchan,
struct tangox_dma_sg *sg, int flags)
{
- writel(sg->addr, pchan->base + DMA_ADDR);
- writel(sg->len, pchan->base + DMA_COUNT);
- wmb();
- writel(DMA_MODE_SINGLE << 1 | flags, pchan->base + DMA_CMD);
- wmb();
+ writel_relaxed(sg->addr, pchan->base + DMA_ADDR);
+ writel_relaxed(sg->len, pchan->base + DMA_COUNT);
+ writel_relaxed(DMA_MODE_SINGLE << 1 | flags, pchan->base + DMA_CMD);
return sg->len;
}
--
2.9.0
next prev parent reply other threads:[~2016-11-23 16:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-23 16:48 Driver for tango DMA engine Marc Gonzalez
2016-11-23 16:49 ` [PATCH 1/6] dmaengine: Import tango MBUS driver Marc Gonzalez
2016-11-23 16:50 ` [PATCH 2/6] Provide names for SBOX register offsets Marc Gonzalez
2016-11-23 16:51 ` [PATCH 3/6] Fixup for tango4 support Marc Gonzalez
2016-11-23 16:51 ` [PATCH 4/6] Fixup tangox_dma_sbox_map Marc Gonzalez
2016-11-23 16:56 ` [PATCH 5/6] Fixup tangox_dma_reset Marc Gonzalez
2016-11-23 16:56 ` Marc Gonzalez [this message]
2016-11-23 17:27 ` Driver for tango DMA engine Måns Rullgård
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