From: Baolin Wang <baolin.wang@linaro.org>
To: dan.j.williams@intel.com, vkoul@kernel.org
Cc: eric.long@unisoc.com, orsonzhai@gmail.com, zhang.lyra@gmail.com,
broonie@kernel.org, baolin.wang@linaro.org,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 4/7] dmaengine: sprd: Add device validation to support multiple controllers
Date: Mon, 15 Apr 2019 20:14:58 +0800 [thread overview]
Message-ID: <d77dca51a14087873627d735a17adcfde5517398.1555330115.git.baolin.wang@linaro.org> (raw)
Message-ID: <20190415121458.GVo5Is6dhZOHvzcjPX9OXI0_Tr0OGL4QKxYPdvsQ9-k@z> (raw)
In-Reply-To: <cover.1555330115.git.baolin.wang@linaro.org>
In-Reply-To: <cover.1555330115.git.baolin.wang@linaro.org>
From: Eric Long <eric.long@unisoc.com>
Since we can support multiple DMA engine controllers, we should add
device validation in filter function to check if the correct controller
to be requested.
Signed-off-by: Eric Long <eric.long@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
drivers/dma/sprd-dma.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c
index 0f92e60..9f99d4b 100644
--- a/drivers/dma/sprd-dma.c
+++ b/drivers/dma/sprd-dma.c
@@ -1020,8 +1020,13 @@ static void sprd_dma_free_desc(struct virt_dma_desc *vd)
static bool sprd_dma_filter_fn(struct dma_chan *chan, void *param)
{
struct sprd_dma_chn *schan = to_sprd_dma_chan(chan);
+ struct of_phandle_args *dma_spec =
+ container_of(param, struct of_phandle_args, args[0]);
u32 slave_id = *(u32 *)param;
+ if (chan->device->dev->of_node != dma_spec->np)
+ return false;
+
schan->dev_id = slave_id;
return true;
}
--
1.7.9.5
next prev parent reply other threads:[~2019-04-15 12:15 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-15 12:14 [PATCH 0/7] Fix some bugs and add new feature for Spreadtrum DMA engine Baolin Wang
2019-04-15 12:14 ` [1/7] dmaengine: sprd: Fix the possible crash when getting engine status Baolin Wang
2019-04-15 12:14 ` [PATCH 1/7] " Baolin Wang
2019-04-29 11:35 ` [1/7] " Vinod Koul
2019-04-29 11:35 ` [PATCH 1/7] " Vinod Koul
2019-04-29 11:49 ` [1/7] " Baolin Wang
2019-04-29 11:49 ` [PATCH 1/7] " Baolin Wang
2019-04-29 12:02 ` [1/7] " Vinod Koul
2019-04-29 12:02 ` [PATCH 1/7] " Vinod Koul
2019-04-15 12:14 ` [2/7] dmaengine: sprd: Add validation of current descriptor in irq handler Baolin Wang
2019-04-15 12:14 ` [PATCH 2/7] " Baolin Wang
2019-04-15 12:14 ` [3/7] dmaengine: sprd: Fix the incorrect start for 2-stage destination channels Baolin Wang
2019-04-15 12:14 ` [PATCH 3/7] " Baolin Wang
2019-04-15 12:14 ` Baolin Wang [this message]
2019-04-15 12:14 ` [PATCH 4/7] dmaengine: sprd: Add device validation to support multiple controllers Baolin Wang
2019-04-29 11:57 ` [4/7] " Vinod Koul
2019-04-29 11:57 ` [PATCH 4/7] " Vinod Koul
2019-04-29 12:20 ` [4/7] " Baolin Wang
2019-04-29 12:20 ` [PATCH 4/7] " Baolin Wang
2019-04-29 14:05 ` [4/7] " Vinod Koul
2019-04-29 14:05 ` [PATCH 4/7] " Vinod Koul
2019-04-30 5:30 ` [4/7] " Baolin Wang
2019-04-30 5:30 ` [PATCH 4/7] " Baolin Wang
2019-04-30 8:29 ` [4/7] " Vinod Koul
2019-04-30 8:29 ` [PATCH 4/7] " Vinod Koul
2019-04-30 8:34 ` [4/7] " Baolin Wang
2019-04-30 8:34 ` [PATCH 4/7] " Baolin Wang
2019-04-30 8:53 ` [4/7] " Baolin Wang
2019-04-30 8:53 ` [PATCH 4/7] " Baolin Wang
2019-05-02 6:01 ` [4/7] " Vinod Koul
2019-05-02 6:01 ` [PATCH 4/7] " Vinod Koul
2019-05-06 4:48 ` Baolin Wang
2019-04-15 12:14 ` [5/7] dmaengine: sprd: Fix block length overflow Baolin Wang
2019-04-15 12:14 ` [PATCH 5/7] " Baolin Wang
2019-04-15 12:15 ` [6/7] dmaengine: sprd: Fix the right place to configure 2-stage transfer Baolin Wang
2019-04-15 12:15 ` [PATCH 6/7] " Baolin Wang
2019-04-15 12:15 ` [7/7] dmaengine: sprd: Add interrupt support for " Baolin Wang
2019-04-15 12:15 ` [PATCH 7/7] " Baolin Wang
2019-04-29 12:01 ` [7/7] " Vinod Koul
2019-04-29 12:01 ` [PATCH 7/7] " Vinod Koul
2019-04-29 12:11 ` [7/7] " Baolin Wang
2019-04-29 12:11 ` [PATCH 7/7] " Baolin Wang
2019-04-29 14:10 ` [7/7] " Vinod Koul
2019-04-29 14:10 ` [PATCH 7/7] " Vinod Koul
2019-04-30 5:37 ` [7/7] " Baolin Wang
2019-04-30 5:37 ` [PATCH 7/7] " Baolin Wang
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