Clang points out a control flow bug, which happens to be harmless:
drivers/iio/adc/stmpe-adc.c:204:13: error: variable 'data' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
The warning is sensible here, so let's just avoid the case by
adding appropriate error handling.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/iio/adc/stmpe-adc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iio/adc/stmpe-adc.c b/drivers/iio/adc/stmpe-adc.c
index 37f4b74a5d32..ed3817c5c896 100644
--- a/drivers/iio/adc/stmpe-adc.c
+++ b/drivers/iio/adc/stmpe-adc.c
@@ -205,6 +205,8 @@ static irqreturn_t stmpe_adc_isr(int irq, void *dev_id)
/* Read value */
stmpe_block_read(info->stmpe, STMPE_REG_TEMP_DATA, 2,
(u8 *) &data);
+ } else {
+ return IRQ_NONE;
}
info->value = (u32) be16_to_cpu(data);
--
2.20.0
