This patch adds error handling for baud clock. It checks for PROBE_DEFER error codes and handles clk_prepare_enable() errors.
Signed-off-by: Markus Pargmann mpa@pengutronix.de --- sound/soc/fsl/fsl_ssi.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-)
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index fcc73d3..663ac8b 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -984,11 +984,19 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev, * and, instead, abandon MASTER mode that needs baud clock. */ ssi_private->baudclk = devm_clk_get(&pdev->dev, "baud"); - if (IS_ERR(ssi_private->baudclk)) + if (IS_ERR(ssi_private->baudclk)) { + ret = PTR_ERR(ssi_private->baudclk); + if (ret == -EPROBE_DEFER) + goto error_baud_clk; dev_dbg(&pdev->dev, "could not get baud clock: %ld\n", - PTR_ERR(ssi_private->baudclk)); - else - clk_prepare_enable(ssi_private->baudclk); + PTR_ERR(ssi_private->baudclk)); + } else { + ret = clk_prepare_enable(ssi_private->baudclk); + if (ret) { + dev_err(&pdev->dev, "Failed to enable baud clock\n"); + goto error_baud_clk; + } + }
/* * We have burstsize be "fifo_depth - 2" to match the SSI @@ -1012,6 +1020,11 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev, }
return 0; + +error_baud_clk: + clk_disable_unprepare(ssi_private->clk); + + return ret; }
static void fsl_ssi_imx_clean(struct platform_device *pdev,