The cookie of completed transfer descriptors are marked as zero. In case of cyclic transfers, a new cookie needs to be assigned to the transfer descriptors which are picked up from the work_list list before they are re-enabled for transfer. This prevents hitting BUG_ON in dma_cookie_complete function when transfer descriptors are recycled from the work_list list.
Signed-off-by: Thomas Abraham <[email protected]> --- drivers/dma/pl330.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 2ee6e23..7f8f422 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2265,6 +2265,7 @@ static inline void handle_cyclic_desc_list(struct list_head *list) dma_async_tx_callback callback; /* Change status to reload it */ + dma_cookie_assign(&desc->txd); desc->status = PREP; pch = desc->pchan; callback = desc->txd.callback; -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
