diff options
Diffstat (limited to 'drivers/media/pci/ivtv/ivtv-irq.c')
| -rw-r--r-- | drivers/media/pci/ivtv/ivtv-irq.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/drivers/media/pci/ivtv/ivtv-irq.c b/drivers/media/pci/ivtv/ivtv-irq.c index ab6d5d25aa6..e7d701777e5 100644 --- a/drivers/media/pci/ivtv/ivtv-irq.c +++ b/drivers/media/pci/ivtv/ivtv-irq.c @@ -357,7 +357,6 @@ void ivtv_dma_stream_dec_prepare(struct ivtv_stream *s, u32 offset, int lock) u32 uv_offset = offset + IVTV_YUV_BUFFER_UV_OFFSET; int y_done = 0; int bytes_written = 0; - unsigned long flags = 0; int idx = 0; IVTV_DEBUG_HI_DMA("DEC PREPARE DMA %s: %08x %08x\n", s->name, s->q_predma.bytesused, offset); @@ -407,16 +406,21 @@ void ivtv_dma_stream_dec_prepare(struct ivtv_stream *s, u32 offset, int lock) /* Sync Hardware SG List of buffers */ ivtv_stream_sync_for_device(s); - if (lock) + if (lock) { + unsigned long flags = 0; + spin_lock_irqsave(&itv->dma_reg_lock, flags); - if (!test_bit(IVTV_F_I_DMA, &itv->i_flags)) { - ivtv_dma_dec_start(s); - } - else { - set_bit(IVTV_F_S_DMA_PENDING, &s->s_flags); - } - if (lock) + if (!test_bit(IVTV_F_I_DMA, &itv->i_flags)) + ivtv_dma_dec_start(s); + else + set_bit(IVTV_F_S_DMA_PENDING, &s->s_flags); spin_unlock_irqrestore(&itv->dma_reg_lock, flags); + } else { + if (!test_bit(IVTV_F_I_DMA, &itv->i_flags)) + ivtv_dma_dec_start(s); + else + set_bit(IVTV_F_S_DMA_PENDING, &s->s_flags); + } } static void ivtv_dma_enc_start_xfer(struct ivtv_stream *s) |