Commit d69d1e17 authored by Robin Gong's avatar Robin Gong Committed by Vinod Koul
Browse files

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: default avatarRobin Gong <yibin.gong@nxp.com>
Reviewed-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Tested-by: default avatarLucas Stach <l.stach@pengutronix.de>
Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 57b772b8

drivers/dma/imx-sdma.c

+0 −23
Original line number Diff line number Diff line
@@ -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;

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