ARM: OMAP3: DMA: Fix for sDMA Errata 1.113
SDMA channel is not disabled after transaction error. So explicitly disable it. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked By : Nishant kamat <nskamat@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
parent
b1c056d20c
commit
a50f18c700
|
@ -1848,9 +1848,22 @@ static int omap2_dma_handle_ch(int ch)
|
||||||
printk(KERN_INFO
|
printk(KERN_INFO
|
||||||
"DMA synchronization event drop occurred with device "
|
"DMA synchronization event drop occurred with device "
|
||||||
"%d\n", dma_chan[ch].dev_id);
|
"%d\n", dma_chan[ch].dev_id);
|
||||||
if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ))
|
if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ)) {
|
||||||
printk(KERN_INFO "DMA transaction error with device %d\n",
|
printk(KERN_INFO "DMA transaction error with device %d\n",
|
||||||
dma_chan[ch].dev_id);
|
dma_chan[ch].dev_id);
|
||||||
|
if (cpu_class_is_omap2()) {
|
||||||
|
/* Errata: sDMA Channel is not disabled
|
||||||
|
* after a transaction error. So we explicitely
|
||||||
|
* disable the channel
|
||||||
|
*/
|
||||||
|
u32 ccr;
|
||||||
|
|
||||||
|
ccr = dma_read(CCR(ch));
|
||||||
|
ccr &= ~OMAP_DMA_CCR_EN;
|
||||||
|
dma_write(ccr, CCR(ch));
|
||||||
|
dma_chan[ch].flags &= ~OMAP_DMA_ACTIVE;
|
||||||
|
}
|
||||||
|
}
|
||||||
if (unlikely(status & OMAP2_DMA_SECURE_ERR_IRQ))
|
if (unlikely(status & OMAP2_DMA_SECURE_ERR_IRQ))
|
||||||
printk(KERN_INFO "DMA secure error with device %d\n",
|
printk(KERN_INFO "DMA secure error with device %d\n",
|
||||||
dma_chan[ch].dev_id);
|
dma_chan[ch].dev_id);
|
||||||
|
|
Loading…
Reference in a new issue