In error path, add cx88_alsa_dma_unmap() to release resource acquired by cx88_alsa_dma_map().

Fixes: b2c75abde0de ("[media] cx88: drop videobuf abuse in cx88-alsa") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li lihaoxiang@isrc.iscas.ac.cn --- drivers/media/pci/cx88/cx88-alsa.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/pci/cx88/cx88-alsa.c b/drivers/media/pci/cx88/cx88-alsa.c index 29fb1311e443..4e574d8390b4 100644 --- a/drivers/media/pci/cx88/cx88-alsa.c +++ b/drivers/media/pci/cx88/cx88-alsa.c @@ -483,8 +483,10 @@ static int snd_cx88_hw_params(struct snd_pcm_substream *substream,

ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->sglist, chip->period_size, chip->num_periods, 1); - if (ret < 0) + if (ret < 0) { + cx88_alsa_dma_unmap(chip); goto error; + }

/* Loop back to start of program */ buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);