[alsa-devel] [PATCH] ASoC: dmaengine: fix deferred probe detection

[Stephen Warren]

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 at intel.com>
Fixes: 5eda87b890f8 ("ASoC: dmaengine: support deferred probe for DMA channels")
Signed-off-by: Stephen Warren <swarren at nvidia.com>
---
 sound/soc/soc-generic-dmaengine-pcm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index 585eaa69e8c3..7483922f6ee3 100644
--- 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 {
-- 
1.8.1.5