len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-09 13:15:18 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Jz4740 PCM driver: check whether pcm_callback_for_more isn't NULL (fixes metronome)

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22072 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Maurus Cuelenaere 2009-07-27 17:00:26 +00:00
parent 8ef07c8a2f
commit 86ef57b975
1 changed files with 5 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

8
firmware/target/mips/ingenic_jz47xx/pcm-jz4740.c
View file

@ -81,11 +81,13 @@ static inline void set_dma(const void *addr, size_t size)
static inline void play_dma_callback(void) static inline void play_dma_callback(void)
{ {
unsigned char *start; unsigned char *start = NULL;
size_t size = 0; size_t size = 0;
pcm_callback_for_more(&start, &size);
if(LIKELY(size > 0)) if(pcm_callback_for_more)
pcm_callback_for_more(&start, &size);
if(LIKELY(size > 0 && start))
{ {
set_dma(start, size); set_dma(start, size);
REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) |= DMAC_DCCSR_EN; REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) |= DMAC_DCCSR_EN;