From: Amelie Delaunay <amelie.delaunay@st.com>
To: Vinod Koul <vkoul@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@st.com>
Cc: Amelie Delaunay <amelie.delaunay@st.com>,
linux-kernel@vger.kernel.org,
Pierre-Yves MORDRET <pierre-yves.mordret@st.com>,
dmaengine@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/6] dmaengine: stm32-mdma: use reset controller only at probe time
Date: Mon, 27 Jan 2020 09:53:30 +0100 [thread overview]
Message-ID: <20200127085334.13163-3-amelie.delaunay@st.com> (raw)
In-Reply-To: <20200127085334.13163-1-amelie.delaunay@st.com>
From: Etienne Carriere <etienne.carriere@st.com>
Remove reset controller reference from device instance since it is
used only at probe time.
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
drivers/dma/stm32-mdma.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 2898411941d5..a0fb80dfb2e9 100644
--- a/drivers/dma/stm32-mdma.c
+++ b/drivers/dma/stm32-mdma.c
@@ -273,7 +273,6 @@ struct stm32_mdma_device {
void __iomem *base;
struct clk *clk;
int irq;
- struct reset_control *rst;
u32 nr_channels;
u32 nr_requests;
u32 nr_ahb_addr_masks;
@@ -1532,6 +1531,7 @@ static int stm32_mdma_probe(struct platform_device *pdev)
struct dma_device *dd;
struct device_node *of_node;
struct resource *res;
+ struct reset_control *rst;
u32 nr_channels, nr_requests;
int i, count, ret;
@@ -1590,11 +1590,11 @@ static int stm32_mdma_probe(struct platform_device *pdev)
return ret;
}
- dmadev->rst = devm_reset_control_get(&pdev->dev, NULL);
- if (!IS_ERR(dmadev->rst)) {
- reset_control_assert(dmadev->rst);
+ rst = devm_reset_control_get(&pdev->dev, NULL);
+ if (!IS_ERR(rst)) {
+ reset_control_assert(rst);
udelay(2);
- reset_control_deassert(dmadev->rst);
+ reset_control_deassert(rst);
}
dd = &dmadev->ddev;
--
2.17.1
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next prev parent reply other threads:[~2020-01-27 8:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-27 8:53 [PATCH 0/6] STM32 MDMA driver fixes and improvements Amelie Delaunay
2020-01-27 8:53 ` [PATCH 1/6] dmaengine: stm32-mdma: add suspend/resume power management support Amelie Delaunay
2020-01-27 8:53 ` Amelie Delaunay [this message]
2020-01-27 8:53 ` [PATCH 3/6] dmaengine: stm32-mdma: disable clock in case of error during probe Amelie Delaunay
2020-01-27 8:53 ` [PATCH 4/6] dmaengine: stm32-mdma: driver defers probe for clock and reset Amelie Delaunay
2020-01-27 8:53 ` [PATCH 5/6] dmaengine: stm32-mdma: enable descriptor_reuse Amelie Delaunay
2020-01-27 8:53 ` [PATCH 6/6] dmaengine: stm32-mdma: use vchan_terminate_vdesc() in .terminate_all Amelie Delaunay
2020-02-24 16:50 ` [PATCH 0/6] STM32 MDMA driver fixes and improvements Vinod Koul
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