[PATCH] thermal: imx8mm: suppress log message on probe deferral

[Ahmad Fatoum]

nvmem_cell_read_u32() may return -EPROBE_DEFER if NVMEM supplier has not
yet been probed. Future reprobe may succeed, so printing:

  i.mx8mm_thermal 30260000.tmu: Failed to read OCOTP nvmem cell (-517).

to the log is confusing. Fix this by using dev_err_probe. This also
elevates the message from warning to error, which is more correct: The
log message is only ever printed in probe error path and probe aborts
afterwards, so it really warrants an error-level message.

Fixes: 403291648823 ("thermal/drivers/imx: Add support for loading calibration data from OCOTP")
Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 drivers/thermal/imx8mm_thermal.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/thermal/imx8mm_thermal.c b/drivers/thermal/imx8mm_thermal.c
index d8005e9ec992..1f780c4a1c89 100644
--- a/drivers/thermal/imx8mm_thermal.c
+++ b/drivers/thermal/imx8mm_thermal.c
@@ -179,10 +179,8 @@ static int imx8mm_tmu_probe_set_calib_v1(struct platform_device *pdev,
 	int ret;
 
 	ret = nvmem_cell_read_u32(&pdev->dev, "calib", &ana0);
-	if (ret) {
-		dev_warn(dev, "Failed to read OCOTP nvmem cell (%d).\n", ret);
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to read OCOTP nvmem cell\n");
 
 	writel(FIELD_PREP(TASR_BUF_VREF_MASK,
 			  FIELD_GET(ANA0_BUF_VREF_MASK, ana0)) |
-- 
2.39.2