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| author | Robin Gong <yibin.gong@nxp.com> | 2018-06-19 19:57:01 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2018-07-02 15:54:47 +0300 |
| commit | d69d1e17c39e0a14f743da72a9e35796e1fd0f87 (patch) | |
| tree | 65dd98221ea61a1b6b951d9ba57e468275d5bdc4 /drivers/dma | |
| parent | 57b772b86871e025c1fc149d8c3e48667be0869f (diff) | |
| download | linux-d69d1e17c39e0a14f743da72a9e35796e1fd0f87.tar.xz | |
dmaengine: imx-sdma: remove useless 'lock' and 'enabled' in 'struct sdma_channel'
Since 'sdmac->vc.lock' and 'sdmac->desc' can be used as 'lock' and
'enabled' in 'struct sdma_channel sdmac', remove them.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/imx-sdma.c | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 86fa7994a5fd..d1d3494eba01 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -342,10 +342,8 @@ struct sdma_channel { unsigned long event_mask[2]; unsigned long watermark_level; u32 shp_addr, per_addr; - spinlock_t lock; enum dma_status status; struct imx_dma_data data; - bool enabled; }; #define IMX_DMA_SG_LOOP BIT(0) @@ -606,14 +604,7 @@ static int sdma_config_ownership(struct sdma_channel *sdmac, static void sdma_enable_channel(struct sdma_engine *sdma, int channel) { - unsigned long flags; - struct sdma_channel *sdmac = &sdma->channel[channel]; - writel(BIT(channel), sdma->regs + SDMA_H_START); - - spin_lock_irqsave(&sdmac->lock, flags); - sdmac->enabled = true; - spin_unlock_irqrestore(&sdmac->lock, flags); } /* @@ -731,14 +722,6 @@ static void sdma_update_channel_loop(struct sdma_channel *sdmac) struct sdma_buffer_descriptor *bd; int error = 0; enum dma_status old_status = sdmac->status; - unsigned long flags; - - spin_lock_irqsave(&sdmac->lock, flags); - if (!sdmac->enabled) { - spin_unlock_irqrestore(&sdmac->lock, flags); - return; - } - spin_unlock_irqrestore(&sdmac->lock, flags); /* * loop mode. Iterate over descriptors, re-setup them and @@ -1000,15 +983,10 @@ static int sdma_disable_channel(struct dma_chan *chan) struct sdma_channel *sdmac = to_sdma_chan(chan); struct sdma_engine *sdma = sdmac->sdma; int channel = sdmac->channel; - unsigned long flags; writel_relaxed(BIT(channel), sdma->regs + SDMA_H_STATSTOP); sdmac->status = DMA_ERROR; - spin_lock_irqsave(&sdmac->lock, flags); - sdmac->enabled = false; - spin_unlock_irqrestore(&sdmac->lock, flags); - return 0; } @@ -1922,7 +1900,6 @@ static int sdma_probe(struct platform_device *pdev) struct sdma_channel *sdmac = &sdma->channel[i]; sdmac->sdma = sdma; - spin_lock_init(&sdmac->lock); sdmac->channel = i; sdmac->vc.desc_free = sdma_desc_free; |