linux-kernel - [PATCH RESEND] ASoC: fsl_sai: Add -EPROBE

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Date:   Mon, 24 Aug 2020 15:58:07 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     timur@...nel.org, nicoleotsuka@...il.com, Xiubo.Lee@...il.com,
        festevam@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, alsa-devel@...a-project.org, lgirdwood@...il.com
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH RESEND] ASoC: fsl_sai: Add -EPROBE_DEFER check for regmap init

Regmap initialization may return -EPROBE_DEFER for clock
may not be ready, so check -EPROBE_DEFER error type before
start another Regmap initialization.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
Acked-by: Nicolin Chen <nicoleotsuka@...il.com>
---
 sound/soc/fsl/fsl_sai.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index f6969a5d49e3..62c5fdb678fc 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -959,7 +959,7 @@ static int fsl_sai_probe(struct platform_device *pdev)
 			"bus", base, &fsl_sai_regmap_config);
 
 	/* Compatible with old DTB cases */
-	if (IS_ERR(sai->regmap))
+	if (IS_ERR(sai->regmap) && PTR_ERR(sai->regmap) != -EPROBE_DEFER)
 		sai->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
 				"sai", base, &fsl_sai_regmap_config);
 	if (IS_ERR(sai->regmap)) {
-- 
2.27.0