dmaengine: imx-dma: remove 'in_use' field of 'internal' structure.
It makes no sense keeping an 'in_use' flag when the multiple descriptor mechanism already prevents a new DMA transfer to be issued when another one is in course. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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@ -131,8 +131,6 @@ enum imxdma_prep_type {
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struct imxdma_channel_internal {
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unsigned int resbytes;
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int in_use;
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struct timer_list watchdog;
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int hw_chaining;
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@ -266,9 +264,6 @@ static void imxdma_enable_hw(struct imxdma_desc *d)
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pr_debug("imxdma%d: imx_dma_enable\n", channel);
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if (imxdmac->internal.in_use)
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return;
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local_irq_save(flags);
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imx_dmav1_writel(1 << channel, DMA_DISR);
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@ -287,7 +282,6 @@ static void imxdma_enable_hw(struct imxdma_desc *d)
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DMA_CCR(channel));
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}
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}
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imxdmac->internal.in_use = 1;
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local_irq_restore(flags);
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}
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@ -307,7 +301,6 @@ static void imxdma_disable_hw(struct imxdma_channel *imxdmac)
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imx_dmav1_writel(imx_dmav1_readl(DMA_CCR(channel)) & ~CCR_CEN,
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DMA_CCR(channel));
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imx_dmav1_writel(1 << channel, DMA_DISR);
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imxdmac->internal.in_use = 0;
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local_irq_restore(flags);
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}
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@ -317,7 +310,6 @@ static void imxdma_watchdog(unsigned long data)
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int channel = imxdmac->channel;
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imx_dmav1_writel(0, DMA_CCR(channel));
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imxdmac->internal.in_use = 0;
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/* Tasklet watchdog error handler */
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tasklet_schedule(&imxdmac->dma_tasklet);
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@ -436,7 +428,6 @@ static void dma_irq_handle_channel(struct imxdma_channel *imxdmac)
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out:
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imx_dmav1_writel(0, DMA_CCR(chno));
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imxdma->in_use = 0;
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/* Tasklet irq */
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tasklet_schedule(&imxdmac->dma_tasklet);
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}
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