diff options
| author | Keith Packard <keithp@keithp.com> | 2016-06-28 17:12:48 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2016-06-29 19:17:45 -0700 |
| commit | 785d2697376ebd20531d22441a60c41bd927b42a (patch) | |
| tree | 5550cf41fc93b6656a67b501cfa42072e1909ad4 /src | |
| parent | 0dec7d0885970a7d73468dd77220bae78e161b40 (diff) | |
altos/stm: use 0xff for dma mutex value for allocated mutexes
DMA channels which are 'allocated' can't be shared. Instead of using
the value '1' in the related 'mutex', use 0xff which won't match any task.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/stm/ao_dma_stm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/stm/ao_dma_stm.c b/src/stm/ao_dma_stm.c index 298a15b5..93b7fb47 100644 --- a/src/stm/ao_dma_stm.c +++ b/src/stm/ao_dma_stm.c @@ -64,7 +64,7 @@ ao_dma_set_transfer(uint8_t index, if (ao_dma_allocated[index]) { if (ao_dma_mutex[index]) ao_panic(AO_PANIC_DMA); - ao_dma_mutex[index] = 1; + ao_dma_mutex[index] = 0xff; } else ao_mutex_get(&ao_dma_mutex[index]); ao_arch_critical( |