[PATCH] iio: adc: nxp-sar-adc: Remove unnecessary type casting

[Felix Gu]

The readl_poll_timeout() macro returns a signed integer error code.

In nxp_sar_adc_calibration_wait(), the return value is casted to u32
before being returned as int, which is unnecessary.

Signed-off-by: Felix Gu <ustc.gu@xxxxxxxxx>
---
 drivers/iio/adc/nxp-sar-adc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/nxp-sar-adc.c b/drivers/iio/adc/nxp-sar-adc.c
index 9efa883c277d..a6e4888a8464 100644
--- a/drivers/iio/adc/nxp-sar-adc.c
+++ b/drivers/iio/adc/nxp-sar-adc.c
@@ -247,7 +247,8 @@ static inline void nxp_sar_adc_calibration_start(void __iomem *base)
 
 static inline int nxp_sar_adc_calibration_wait(void __iomem *base)
 {
-	u32 msr, ret;
+	u32 msr;
+	int ret;
 
 	ret = readl_poll_timeout(NXP_SAR_ADC_MSR(base), msr,
 				 !FIELD_GET(NXP_SAR_ADC_MSR_CALBUSY, msr),

---
base-commit: d4906ae14a5f136ceb671bb14cedbf13fa560da6
change-id: 20260222-nxp-sar-adc-1906a65ce5b6

Best regards,
-- 
Felix Gu <ustc.gu@xxxxxxxxx>