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| author | Maurus Cuelenaere <mcuelenaere@gmail.com> | 2009-07-27 17:00:26 +0000 |
|---|---|---|
| committer | Maurus Cuelenaere <mcuelenaere@gmail.com> | 2009-07-27 17:00:26 +0000 |
| commit | 86ef57b9757c7cc23951040c5c46966728eeb8fa (patch) | |
| tree | de0b8866e6681688a6ecfb9dd1063243d1e124e8 /firmware/target/mips/ingenic_jz47xx/pcm-jz4740.c | |
| parent | 8ef07c8a2f43f3efb4993446a122e32f4ae23efc (diff) | |
| download | rockbox-86ef57b9757c7cc23951040c5c46966728eeb8fa.tar.gz rockbox-86ef57b9757c7cc23951040c5c46966728eeb8fa.zip | |
Jz4740 PCM driver: check whether pcm_callback_for_more isn't NULL (fixes metronome)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22072 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/mips/ingenic_jz47xx/pcm-jz4740.c')
| -rw-r--r-- | firmware/target/mips/ingenic_jz47xx/pcm-jz4740.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/firmware/target/mips/ingenic_jz47xx/pcm-jz4740.c b/firmware/target/mips/ingenic_jz47xx/pcm-jz4740.c index 1fbc94065b..32a14744df 100644 --- a/firmware/target/mips/ingenic_jz47xx/pcm-jz4740.c +++ b/firmware/target/mips/ingenic_jz47xx/pcm-jz4740.c @@ -81,11 +81,13 @@ static inline void set_dma(const void *addr, size_t size) static inline void play_dma_callback(void) { - unsigned char *start; + unsigned char *start = NULL; 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); REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) |= DMAC_DCCSR_EN; |