Messages in this thread | | | Date | Tue, 5 Feb 2019 14:22:17 +1100 | From | Stephen Rothwell <> | Subject | linux-next: build warnings after merge of the staging tree |
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Hi Greg,
After merging the staging tree, today's linux-next build (x86_64 allmodconfig) produced these warnings:
drivers/iio/chemical/sps30.c: In function 'sps30_read_raw': drivers/iio/chemical/sps30.c:289:4: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (chan->channel2) { ^~~~~~ drivers/iio/chemical/sps30.c:299:3: note: here default: ^~~~~~~ drivers/iio/chemical/sps30.c: In function 'sps30_do_cmd': drivers/iio/chemical/sps30.c:120:10: warning: this statement may fall through [-Wimplicit-fallthrough=] buf[1] = (u8)SPS30_AUTO_CLEANING_PERIOD; ^ drivers/iio/chemical/sps30.c:121:2: note: here case SPS30_READ_DATA_READY_FLAG: ^~~~
Introduced by commits
232e0f6ddeae ("iio: chemical: add support for Sensirion SPS30 sensor") 62129a0849d2 ("iio: chemical: sps30: allow changing self cleaning period")
I get this warning because I am building with -Wimplicit-fallthrough in attempt to catch new additions early. The gcc warning can be turned off by adding a /* fall through */ comment at the point the fall through happens (assuming that the fall through is intentional).
-- Cheers, Stephen Rothwell [unhandled content-type:application/pgp-signature] | |