diff options
| author |   Peter Ujfalusi <peter.ujfalusi@ti.com> | 2020-08-06 13:49:28 +0300 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2020-08-17 11:14:28 +0530 |
| commit | 5b2aa9f918f6837ae943557f8cec02c34fcf80e7 (patch) | |
| tree | 84e463cedbd65f2226879f4209b8e7f0349ab510 /drivers/dma/of-dma.c | |
| parent | dmaengine: idxd: reset states after device disable or reset (diff) | |
| download | linux-dev-5b2aa9f918f6837ae943557f8cec02c34fcf80e7.tar.xz linux-dev-5b2aa9f918f6837ae943557f8cec02c34fcf80e7.zip | |
dmaengine: of-dma: Fix of_dma_router_xlate's of_dma_xlate handling
of_dma_xlate callback can return ERR_PTR as well NULL in case of failure.
If error code is returned (not NULL) then the route should be released and
the router should not be registered for the channel.
Fixes: 56f13c0d9524c ("dmaengine: of_dma: Support for DMA routers")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200806104928.25975-1-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/of-dma.c')
| -rw-r--r-- | drivers/dma/of-dma.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c index 863f2aaf5c8f..8a4f608904b9 100644 --- a/drivers/dma/of-dma.c +++ b/drivers/dma/of-dma.c @@ -71,12 +71,12 @@ static struct dma_chan *of_dma_router_xlate(struct of_phandle_args *dma_spec, return NULL; chan = ofdma_target->of_dma_xlate(&dma_spec_target, ofdma_target); - if (chan) { - chan->router = ofdma->dma_router; - chan->route_data = route_data; - } else { + if (IS_ERR_OR_NULL(chan)) { ofdma->dma_router->route_free(ofdma->dma_router->dev, route_data); + } else { + chan->router = ofdma->dma_router; + chan->route_data = route_data; } /* |