From: Peter Ujfalusi Date: Mon, 11 Jan 2016 08:38:01 +0000 (+0200) Subject: dmaengine: edma: Fix paRAM slot allocation for entry channel 0 X-Git-Tag: v4.5-rc1~51^2~4 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d20313b2c407a90fb60eca99d73c47a75bb42e08;p=karo-tx-linux.git dmaengine: edma: Fix paRAM slot allocation for entry channel 0 edma_alloc_slot was not checking the channel mapping support existence when slot 0 has been requested (used as entry slot for channel/event 0). Signed-off-by: Peter Ujfalusi Signed-off-by: Vinod Koul --- diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 6b3e9d991010..bdb9339a91c7 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -484,7 +484,7 @@ static void edma_read_slot(struct edma_cc *ecc, unsigned slot, */ static int edma_alloc_slot(struct edma_cc *ecc, int slot) { - if (slot > 0) { + if (slot >= 0) { slot = EDMA_CHAN_SLOT(slot); /* Requesting entry paRAM slot for a HW triggered channel. */ if (ecc->chmap_exist && slot < ecc->num_channels)