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Commit e4756b5e authored by Javier Martin's avatar Javier Martin Committed by Vinod Koul
Browse files

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: default avatarJavier Martin <javier.martin@vista-silicon.com>
Acked-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarVinod Koul <vinod.koul@linux.intel.com>
parent 833bc03b

drivers/dma/imx-dma.c

+0 −9
Original line number Diff line number Diff line
@@ -131,8 +131,6 @@ enum imxdma_prep_type { 
struct imxdma_channel_internal {

	unsigned int resbytes;



	int in_use;



	struct timer_list watchdog;



	int hw_chaining;
@@ -266,9 +264,6 @@ static void imxdma_enable_hw(struct imxdma_desc *d) 


	pr_debug("imxdma%d: imx_dma_enable\n", channel);



	if (imxdmac->internal.in_use)

		return;



	local_irq_save(flags);



	imx_dmav1_writel(1 << channel, DMA_DISR);
@@ -287,7 +282,6 @@ static void imxdma_enable_hw(struct imxdma_desc *d) 
				DMA_CCR(channel));

		}

	}

	imxdmac->internal.in_use = 1;



	local_irq_restore(flags);

}
@@ -307,7 +301,6 @@ static void imxdma_disable_hw(struct imxdma_channel *imxdmac) 
	imx_dmav1_writel(imx_dmav1_readl(DMA_CCR(channel)) & ~CCR_CEN,

			DMA_CCR(channel));

	imx_dmav1_writel(1 << channel, DMA_DISR);

	imxdmac->internal.in_use = 0;

	local_irq_restore(flags);

}
@@ -317,7 +310,6 @@ static void imxdma_watchdog(unsigned long data) 
	int channel = imxdmac->channel;



	imx_dmav1_writel(0, DMA_CCR(channel));

	imxdmac->internal.in_use = 0;



	/* Tasklet watchdog error handler */

	tasklet_schedule(&imxdmac->dma_tasklet);
@@ -436,7 +428,6 @@ static void dma_irq_handle_channel(struct imxdma_channel *imxdmac) 


out:

	imx_dmav1_writel(0, DMA_CCR(chno));

	imxdma->in_use = 0;

	/* Tasklet irq */

	tasklet_schedule(&imxdmac->dma_tasklet);

}