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From 12b887445779c33285dac5279fc02fd80e0800d8 Mon Sep 17 00:00:00 2001
From: Viorel Suman <viorel.suman@nxp.com>
Date: Fri, 9 Mar 2018 12:41:42 +0200
Subject: [PATCH] MLK-17580: ASoC: fsl: sai: check for pinctrl status
For some cases (like AMIX) pinctrl may be null - this
breaks SAI functionality. Enforce pinctrl null pointer
checking prior calling any function which involves
pins state changes.
Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
---
sound/soc/fsl/fsl_sai.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -530,14 +530,17 @@ static int fsl_sai_hw_params(struct snd_
pins = DIV_ROUND_UP(channels, slots);
sai->is_dsd = fsl_is_dsd(params);
- sai->pins_state = fsl_get_pins_state(sai->pinctrl, params);
- if (!IS_ERR_OR_NULL(sai->pins_state)) {
- ret = pinctrl_select_state(sai->pinctrl, sai->pins_state);
- if (ret) {
- dev_err(cpu_dai->dev,
- "failed to set proper pins state: %d\n", ret);
- return ret;
+ if (!IS_ERR_OR_NULL(sai->pinctrl)) {
+ sai->pins_state = fsl_get_pins_state(sai->pinctrl, params);
+
+ if (!IS_ERR_OR_NULL(sai->pins_state)) {
+ ret = pinctrl_select_state(sai->pinctrl, sai->pins_state);
+ if (ret) {
+ dev_err(cpu_dai->dev,
+ "failed to set proper pins state: %d\n", ret);
+ return ret;
+ }
}
}
@@ -920,7 +923,7 @@ static int fsl_sai_dai_resume(struct snd
struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
int ret;
- if (!IS_ERR_OR_NULL(sai->pins_state)) {
+ if (!IS_ERR_OR_NULL(sai->pinctrl) && !IS_ERR_OR_NULL(sai->pins_state)) {
ret = pinctrl_select_state(sai->pinctrl, sai->pins_state);
if (ret) {
dev_err(cpu_dai->dev,
@@ -1343,7 +1346,7 @@ static int fsl_sai_probe(struct platform
sai->dma_params_rx.maxburst = FSL_SAI_MAXBURST_RX;
sai->dma_params_tx.maxburst = FSL_SAI_MAXBURST_TX;
- sai->pinctrl = devm_pinctrl_get(&pdev->dev);
+ sai->pinctrl = devm_pinctrl_get(&pdev->dev);
platform_set_drvdata(pdev, sai);
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