* [PATCH] iio: pressure: abp2030pa: Remove unreachable return in abp2_read_raw()
@ 2026-07-26 7:22 Babanpreet Singh
2026-07-26 9:42 ` Siratul Islam
0 siblings, 1 reply; 2+ messages in thread
From: Babanpreet Singh @ 2026-07-26 7:22 UTC (permalink / raw)
To: Jonathan Cameron, Petre Rodan
Cc: David Lechner, Nuno Sá, Andy Shevchenko, linux-iio,
linux-kernel, Babanpreet Singh
In the IIO_CHAN_INFO_RAW case every arm of the inner switch on
channel->type returns - IIO_PRESSURE and IIO_TEMP return IIO_VAL_INT and
default returns -EINVAL - so the "return IIO_VAL_INT;" following that
switch cannot be reached. The sibling IIO_CHAN_INFO_SCALE and
IIO_CHAN_INFO_OFFSET cases have the same shape and no trailing return,
so drop it here as well.
Found by smatch:
drivers/iio/pressure/abp2030pa.c:382 abp2_read_raw() warn: ignoring unreachable code.
No functional change: the compiler already discarded the statement, and
the generated object code is identical before and after.
Assisted-by: Claude:claude-opus-5
Signed-off-by: Babanpreet Singh <bbnpreetsingh@gmail.com>
---
drivers/iio/pressure/abp2030pa.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/iio/pressure/abp2030pa.c b/drivers/iio/pressure/abp2030pa.c
index b44f1bf4c633..41395036e9ad 100644
--- a/drivers/iio/pressure/abp2030pa.c
+++ b/drivers/iio/pressure/abp2030pa.c
@@ -379,7 +379,6 @@ static int abp2_read_raw(struct iio_dev *indio_dev,
default:
return -EINVAL;
}
- return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
switch (channel->type) {
--
2.43.0
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] iio: pressure: abp2030pa: Remove unreachable return in abp2_read_raw()
2026-07-26 7:22 [PATCH] iio: pressure: abp2030pa: Remove unreachable return in abp2_read_raw() Babanpreet Singh
@ 2026-07-26 9:42 ` Siratul Islam
0 siblings, 0 replies; 2+ messages in thread
From: Siratul Islam @ 2026-07-26 9:42 UTC (permalink / raw)
To: Babanpreet Singh, Jonathan Cameron, Petre Rodan
Cc: David Lechner, Nuno Sá, Andy Shevchenko, linux-iio,
linux-kernel
On Sun, 2026-07-26 at 07:22 +0000, Babanpreet Singh wrote:
> In the IIO_CHAN_INFO_RAW case every arm of the inner switch on
> channel->type returns - IIO_PRESSURE and IIO_TEMP return IIO_VAL_INT and
> default returns -EINVAL - so the "return IIO_VAL_INT;" following that
> switch cannot be reached. The sibling IIO_CHAN_INFO_SCALE and
> IIO_CHAN_INFO_OFFSET cases have the same shape and no trailing return,
> so drop it here as well.
>
> Found by smatch:
> drivers/iio/pressure/abp2030pa.c:382 abp2_read_raw() warn: ignoring unreachable code.
>
> No functional change: the compiler already discarded the statement, and
> the generated object code is identical before and after.
>
> Assisted-by: Claude:claude-opus-5
> Signed-off-by: Babanpreet Singh <bbnpreetsingh@gmail.com>
> ---
>
LGTM.
Reviewed-by: Siratul Islam <siratul.islam@linux.dev>
--
Best regards,
Sirat
^ permalink raw reply [flat|nested] 2+ messages in thread
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2026-07-26 7:22 [PATCH] iio: pressure: abp2030pa: Remove unreachable return in abp2_read_raw() Babanpreet Singh
2026-07-26 9:42 ` Siratul Islam
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