The -Wempty-body gcc warning triggers in the newly added zpa2326 driver:
drivers/iio/pressure/zpa2326.c: In function 'zpa2326_dequeue_pressure':
drivers/iio/pressure/zpa2326.c:578:3: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
The use of an empty statement behind 'if (...)' is harmless here, but
it shows that the dev_dbg() macro is not used correctly: when the "DEBUG"
macro is not set, dev_dbg() already defaults to a no-operation, though
one that lets the compiler know that the arguments are used, and lets
it check the format string.
Fixing this also simplifies the driver.
Fixes: 03b262f2bbf4 ("iio:pressure: initial zpa2326 barometer support")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/iio/pressure/zpa2326.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c
index 19d2eb46fda6..c720c3ac0b9b 100644
--- a/drivers/iio/pressure/zpa2326.c
+++ b/drivers/iio/pressure/zpa2326.c
@@ -147,12 +147,8 @@ struct zpa2326_private {
#define zpa2326_warn(_idev, _format, _arg...) \
dev_warn(_idev->dev.parent, _format, ##_arg)
-#ifdef DEBUG
#define zpa2326_dbg(_idev, _format, _arg...) \
dev_dbg(_idev->dev.parent, _format, ##_arg)
-#else
-#define zpa2326_dbg(_idev, _format, _arg...)
-#endif
bool zpa2326_isreg_writeable(struct device *dev, unsigned int reg)
{
--
2.9.0
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