diff options
| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-04-04 20:33:19 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-04-07 00:35:42 +0200 |
| commit | 5c15a6869a75000fecea61e9985f4753311ec534 (patch) | |
| tree | 99875c92f29d4cc9ee2ff6438c6b34488341bbd9 /sound/soc/fsl/fsl_dma.c | |
| parent | ASoC: Fix null dereference in ak4535_remove() (diff) | |
| download | linux-5c15a6869a75000fecea61e9985f4753311ec534.tar.xz linux-5c15a6869a75000fecea61e9985f4753311ec534.zip | |
ASoC: fsl_dma: Pass the proper device for dma mapping routines
The driver should pass a device that specifies internal DMA ops, but
substream->pcm is just a logical device, and thus doesn't have arch-
specific dma callbacks, therefore following bug appears:
Freescale Synchronous Serial Interface (SSI) ASoC Driver
------------[ cut here ]------------
kernel BUG at arch/powerpc/include/asm/dma-mapping.h:237!
Oops: Exception in kernel mode, sig: 5 [#1]
...
NIP [c02259c4] snd_malloc_dev_pages+0x58/0xac
LR [c0225c74] snd_dma_alloc_pages+0xf8/0x108
Call Trace:
[df02bde0] [df02be2c] 0xdf02be2c (unreliable)
[df02bdf0] [c0225c74] snd_dma_alloc_pages+0xf8/0x108
[df02be10] [c023a100] fsl_dma_new+0x68/0x124
[df02be20] [c02342ac] soc_new_pcm+0x1bc/0x234
[df02bea0] [c02343dc] snd_soc_new_pcms+0xb8/0x148
[df02bed0] [c023824c] cs4270_probe+0x34/0x124
[df02bef0] [c0232fe8] snd_soc_instantiate_card+0x1a4/0x2f4
[df02bf20] [c0233164] snd_soc_instantiate_cards+0x2c/0x68
[df02bf30] [c0234704] snd_soc_register_platform+0x60/0x80
[df02bf50] [c03d5664] fsl_soc_platform_init+0x18/0x28
...
This patch fixes the issue by using card's device instead.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/fsl/fsl_dma.c')
| -rw-r--r-- | sound/soc/fsl/fsl_dma.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/sound/soc/fsl/fsl_dma.c b/sound/soc/fsl/fsl_dma.c index 2c4892c853cf..b1a3a278819f 100644 --- a/sound/soc/fsl/fsl_dma.c +++ b/sound/soc/fsl/fsl_dma.c @@ -300,7 +300,7 @@ static int fsl_dma_new(struct snd_card *card, struct snd_soc_dai *dai, if (!card->dev->coherent_dma_mask) card->dev->coherent_dma_mask = fsl_dma_dmamask; - ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->dev, + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, fsl_dma_hardware.buffer_bytes_max, &pcm->streams[0].substream->dma_buffer); if (ret) { @@ -310,7 +310,7 @@ static int fsl_dma_new(struct snd_card *card, struct snd_soc_dai *dai, return -ENOMEM; } - ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->dev, + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, fsl_dma_hardware.buffer_bytes_max, &pcm->streams[1].substream->dma_buffer); if (ret) { @@ -418,7 +418,7 @@ static int fsl_dma_open(struct snd_pcm_substream *substream) return -EBUSY; } - dma_private = dma_alloc_coherent(substream->pcm->dev, + dma_private = dma_alloc_coherent(substream->pcm->card->dev, sizeof(struct fsl_dma_private), &ld_buf_phys, GFP_KERNEL); if (!dma_private) { dev_err(substream->pcm->card->dev, @@ -445,7 +445,7 @@ static int fsl_dma_open(struct snd_pcm_substream *substream) dev_err(substream->pcm->card->dev, "can't register ISR for IRQ %u (ret=%i)\n", dma_private->irq, ret); - dma_free_coherent(substream->pcm->dev, + dma_free_coherent(substream->pcm->card->dev, sizeof(struct fsl_dma_private), dma_private, dma_private->ld_buf_phys); return ret; @@ -778,13 +778,13 @@ static int fsl_dma_close(struct snd_pcm_substream *substream) free_irq(dma_private->irq, dma_private); if (dma_private->ld_buf_phys) { - dma_unmap_single(substream->pcm->dev, + dma_unmap_single(substream->pcm->card->dev, dma_private->ld_buf_phys, sizeof(dma_private->link), DMA_TO_DEVICE); } /* Deallocate the fsl_dma_private structure */ - dma_free_coherent(substream->pcm->dev, + dma_free_coherent(substream->pcm->card->dev, sizeof(struct fsl_dma_private), dma_private, dma_private->ld_buf_phys); substream->runtime->private_data = NULL; |