From: Vinod Koul <vinod.koul@intel.com>
To: Kedareswara rao Appana <appana.durga.rao@xilinx.com>
Cc: dan.j.williams@intel.com, michal.simek@xilinx.com,
appanad@xilinx.com, lars@metafoo.de, akinobu.mita@gmail.com,
joabreu@synopsys.com, mike.looijmans@topic.nl,
kedare06@gmail.com, dmaengine@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [LINUX,1/4] dmaengine: xilinx_dma: Fix dma_get_slave_caps() API failures
Date: Wed, 3 Jan 2018 09:27:35 +0530 [thread overview]
Message-ID: <20180103035735.GF18649@localhost> (raw)
On Thu, Dec 21, 2017 at 03:41:35PM +0530, Kedareswara rao Appana wrote:
Patch title should say what is does, not the cause/effect
An apt title might be "populate dma caps properly"
> When client driver uses dma_get_slave_caps() api,
> it checks for certain fields of dma_device struct
> currently driver is not settings few fields resulting
> dma_get_slave_caps() returning failure.
It would help to mention the fields you are setting here
>
> This patch fixes this issue by populating proper values
> to the struct dma_device fields.
>
> Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
> ---
> 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 88d317d..21ac954 100644
> --- a/drivers/dma/xilinx/xilinx_dma.c
> +++ b/drivers/dma/xilinx/xilinx_dma.c
> @@ -2398,6 +2398,7 @@ static int xilinx_dma_chan_probe(struct xilinx_dma_device *xdev,
> chan->direction = DMA_MEM_TO_DEV;
> chan->id = chan_id;
> chan->tdest = chan_id;
> + xdev->common.directions = BIT(DMA_MEM_TO_DEV);
>
> chan->ctrl_offset = XILINX_DMA_MM2S_CTRL_OFFSET;
> if (xdev->dma_config->dmatype == XDMA_TYPE_VDMA) {
> @@ -2415,6 +2416,7 @@ static int xilinx_dma_chan_probe(struct xilinx_dma_device *xdev,
> chan->direction = DMA_DEV_TO_MEM;
> chan->id = chan_id;
> chan->tdest = chan_id - xdev->nr_channels;
> + xdev->common.directions |= BIT(DMA_DEV_TO_MEM);
>
> chan->ctrl_offset = XILINX_DMA_S2MM_CTRL_OFFSET;
> if (xdev->dma_config->dmatype == XDMA_TYPE_VDMA) {
> @@ -2629,6 +2631,8 @@ static int xilinx_dma_probe(struct platform_device *pdev)
> dma_cap_set(DMA_PRIVATE, xdev->common.cap_mask);
> }
>
> + xdev->common.dst_addr_widths = BIT(addr_width / 8);
> + xdev->common.src_addr_widths = BIT(addr_width / 8);
> xdev->common.device_alloc_chan_resources =
> xilinx_dma_alloc_chan_resources;
> xdev->common.device_free_chan_resources =
> --
> 2.7.4
>
> --
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> More majordomo info at http://vger.kernel.org/majordomo-info.html
next reply other threads:[~2018-01-03 3:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-03 3:57 Vinod Koul [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-01-03 5:09 [LINUX,1/4] dmaengine: xilinx_dma: Fix dma_get_slave_caps() API failures Appana Durga Kedareswara Rao
2017-12-21 10:11 Kedareswara rao Appana
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