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dmaengine: imx-dma: remove 'in_use' field of 'internal' structure.

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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>
This commit is contained in:
Javier Martin 2012-03-22 14:54:08 +01:00 committed by Vinod Koul
parent 833bc03bf1
commit e4756b5e06
1 changed files with 0 additions and 9 deletions
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9
drivers/dma/imx-dma.c
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@ -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);
}