ASoC: dmaengine: fix deferred probe detection

Check the return value of dma_request_slave_channel_reason() to see if
deferred probe happens, not the variable the return value will be
assigned to later.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 5eda87b890f8 ("ASoC: dmaengine: support deferred probe for DMA channels")
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index 585eaa6..7483922 100644 (file)
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -321,7 +321,7 @@ static int dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm,
                        name = config->chan_names[i];
                chan = dma_request_slave_channel_reason(dev, name);
                if (IS_ERR(chan)) {
-                       if (PTR_ERR(pcm->chan[i]) == -EPROBE_DEFER)
+                       if (PTR_ERR(chan) == -EPROBE_DEFER)
                                return -EPROBE_DEFER;
                        pcm->chan[i] = NULL;
                } else {