diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2019-02-18 21:27:06 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-02-19 15:10:35 +0300 |
| commit | 3e5daee5ecf314da33a890fabaa2404244cd2a36 (patch) | |
| tree | 580fa7a26b5f8b4e6147a0bee470058f6d4a59f4 /drivers/dma | |
| parent | 85ed4f43db866fe1ea90bcca8cd1e5e628f04a6f (diff) | |
| download | linux-3e5daee5ecf314da33a890fabaa2404244cd2a36.tar.xz | |
dmaengine: mv_xor: Use correct device for DMA API
Using dma_dev->dev for mappings before it's assigned with the correct
device is unlikely to work as expected, and with future dma-direct
changes, passing a NULL device may end up crashing entirely. I don't
know enough about this hardware or the mv_xor_prep_dma_interrupt()
operation to implement the appropriate error-handling logic that would
have revealed those dma_map_single() calls failing on arm64 for as long
as the driver has been enabled there, but moving the assignment earlier
will at least make the current code operate as intended.
Fixes: 22843545b200 ("dma: mv_xor: Add support for DMA_INTERRUPT")
Reported-by: John David Anglin <dave.anglin@bell.net>
Tested-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/mv_xor.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index 7f595355fb79..fe4a7c71fede 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -1059,6 +1059,7 @@ mv_xor_channel_add(struct mv_xor_device *xordev, mv_chan->op_in_desc = XOR_MODE_IN_DESC; dma_dev = &mv_chan->dmadev; + dma_dev->dev = &pdev->dev; mv_chan->xordev = xordev; /* @@ -1091,7 +1092,6 @@ mv_xor_channel_add(struct mv_xor_device *xordev, dma_dev->device_free_chan_resources = mv_xor_free_chan_resources; dma_dev->device_tx_status = mv_xor_status; dma_dev->device_issue_pending = mv_xor_issue_pending; - dma_dev->dev = &pdev->dev; /* set prep routines based on capability */ if (dma_has_cap(DMA_INTERRUPT, dma_dev->cap_mask)) |