[PATCH v2 20/32] OMAP: PM: Clear DMA channel state after a wakeup

[Kevin Hilman]

From: Aaro Koskinen <aaro.koskinen at nokia.com>

Clear DMA channel states so that users can assume a known initial
state.

Signed-off-by: Aaro Koskinen <aaro.koskinen at nokia.com>
Signed-off-by: Kevin Hilman <khilman at deeprootsystems.com>
---
 arch/arm/plat-omap/dma.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 3b91fd3..f716234 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -2359,6 +2359,8 @@ EXPORT_SYMBOL(omap_dma_global_context_save);
 
 void omap_dma_global_context_restore(void)
 {
+	int ch;
+
 	dma_write(omap_dma_global_context.dma_gcr, GCR);
 	dma_write(omap_dma_global_context.dma_ocp_sysconfig,
 		OCP_SYSCONFIG);
@@ -2373,6 +2375,10 @@ void omap_dma_global_context_restore(void)
 	 */
 	if (cpu_is_omap34xx() && (omap_type() != OMAP2_DEVICE_TYPE_GP))
 		dma_write(0x3 , IRQSTATUS_L0);
+
+	for (ch = 0; ch < dma_chan_count; ch++)
+		if (dma_chan[ch].dev_id != -1)
+			omap_clear_dma(ch);
 }
 EXPORT_SYMBOL(omap_dma_global_context_restore);
 
-- 
1.6.4.3