diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2015-10-14 13:42:59 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-10-14 16:27:12 +0200 |
| commit | fc014095da23575297288bb3ab215db7c50af381 (patch) | |
| tree | bc6a0e3dbcee0493d33d56737abde2970deb6ccd /drivers/dma | |
| parent | dmaengine: edma: Use the edma_write_slot instead open coded memcpy_toio (diff) | |
| download | linux-fc014095da23575297288bb3ab215db7c50af381.tar.xz linux-fc014095da23575297288bb3ab215db7c50af381.zip | |
dmaengine: edma: Print warning when linking slots from different eDMA
Warning message in case of linking between paRAM slots in different eDMA
controllers.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/edma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index f6653da0ee16..d33ae0b43925 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -619,6 +619,9 @@ static void edma_free_slot(struct edma_cc *ecc, unsigned slot) */ static void edma_link(struct edma_cc *ecc, unsigned from, unsigned to) { + if (unlikely(EDMA_CTLR(from) != EDMA_CTLR(to))) + dev_warn(ecc->dev, "Ignoring eDMA instance for linking\n"); + from = EDMA_CHAN_SLOT(from); to = EDMA_CHAN_SLOT(to); if (from >= ecc->num_slots || to >= ecc->num_slots) |