ARM: OMAP: DMA: Fix incorrect channel linking
Function enable_lnk does incorrect channel link on non-omap1 builds if chain
is created manually with omap_request_dma and omap_dma_link_lch functions.
Fix this by making sure that next_linked_ch field is initialized to -1 just
in omap_request_dma.
Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 7937406..c00eda5 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -604,6 +604,7 @@
chan->data = data;
#ifndef CONFIG_ARCH_OMAP1
chan->chain_id = -1;
+ chan->next_linked_ch = -1;
#endif
chan->enabled_irqs = OMAP_DMA_DROP_IRQ | OMAP_DMA_BLOCK_IRQ;
@@ -1087,7 +1088,6 @@
printk(KERN_ERR "omap_dma: Request failed %d\n", err);
return err;
}
- dma_chan[channels[i]].next_linked_ch = -1;
dma_chan[channels[i]].prev_linked_ch = -1;
dma_chan[channels[i]].state = DMA_CH_NOTSTARTED;