diff options
| author | Russell King - ARM Linux <[email protected]> | 2011-01-03 22:46:17 +0000 |
|---|---|---|
| committer | Dan Williams <[email protected]> | 2011-01-04 19:16:14 -0800 |
| commit | b7f758659265c173380b792862aaad1c23c0e004 (patch) | |
| tree | b67550bae43e48026c00284a9a64257ef11aae43 | |
| parent | f0fd944625b6e406dc273b8dffa16e0728c973e6 (diff) | |
ARM: PL08x: prevent dma_set_runtime_config() reconfiguring memcpy channels
Prevent dma_set_runtime_config() being used to alter the configuration
supplied by the platform for memcpy channel configuration. No one
should be trying to change this configuration.
Signed-off-by: Russell King <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
| -rw-r--r-- | drivers/dma/amba-pl08x.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index c7f7b82f6155..bebc678ed4fc 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -1129,6 +1129,9 @@ static int dma_set_runtime_config(struct dma_chan *chan, u32 cctl = 0; int i; + if (!plchan->slave) + return -EINVAL; + /* Transfer direction */ plchan->runtime_direction = config->direction; if (config->direction == DMA_TO_DEVICE) { |