[PATCH v2 2/6] ASoC: fsl_asrc: Fix handling of deferred spba clock

[phucduc.bui@gmail.com]

From: bui duc phuc <phucduc.bui@gmail.com>

The current device tree binding does not describe the spba clock
as optional. However, the driver currently continues probing when
devm_clk_get() returns an error.

Return -EPROBE_DEFER when the clock provider is not ready, allowing
the driver to retry probing later. Preserve the existing behavior
for other errors.

Fixes: 13b8a97a760e ("ASoC: fsl_asrc: spba clock is needed by asrc device")
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/fsl_asrc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 055593d5d37b..c91ffb5e0c5e 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c
@@ -1315,8 +1315,11 @@ static int fsl_asrc_probe(struct platform_device *pdev)
 				     "failed to get ipg clock\n");
 
 	asrc->spba_clk = devm_clk_get(&pdev->dev, "spba");
-	if (IS_ERR(asrc->spba_clk))
+	if (IS_ERR(asrc->spba_clk)) {
+		if (PTR_ERR(asrc->spba_clk) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
 		dev_warn(&pdev->dev, "failed to get spba clock\n");
+	}
 
 	for (i = 0; i < ASRC_CLK_MAX_NUM; i++) {
 		sprintf(tmp, "asrck_%x", i);
-- 
2.43.0