ARM: OMAP: DMA: Fix uninitialized channel flags

This has similar symptoms than 66c23551b1b774e2be3c7bdf91c0ebf2c7a3519e
where just omap_request_dma, omap_dma_link_lch and omap_dma_unlink_lch
can cause incorrect dump_stack(). Here it can happen if channel has been
used before and the channel flags variable holds old status.

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index bec8e363d545..47ec77af4ccb 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -709,6 +709,7 @@ int omap_request_dma(int dev_id, const char *dev_name,
         chan->dev_name = dev_name;
         chan->callback = callback;
         chan->data = data;
+        chan->flags = 0;
 
 #ifndef CONFIG_ARCH_OMAP1
         if (cpu_class_is_omap2()) {