lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date:   Thu, 6 Jun 2019 10:32:20 +1000
From:   Stephen Rothwell <>
To:     Guenter Roeck <>
Cc:     Linux Next Mailing List <>,
        Linux Kernel Mailing List <>,
        "amy.shih" <>,
        "Gustavo A. R. Silva" <>,
        Kees Cook <>
Subject: linux-next: build warnings after merge of the hwmon-staging tree

Hi all,

After merging the hwmon-staging tree, today's linux-next build (x86_64
allmodconfig) produced this warning:

drivers/hwmon/nct7904.c: In function 'nct7904_in_is_visible':
drivers/hwmon/nct7904.c:313:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (channel > 0 && (data->vsen_mask & BIT(index)))
drivers/hwmon/nct7904.c:315:2: note: here
  case hwmon_in_min:
drivers/hwmon/nct7904.c: In function 'nct7904_fan_is_visible':
drivers/hwmon/nct7904.c:230:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (data->fanin_mask & (1 << channel))
drivers/hwmon/nct7904.c:232:2: note: here
  case hwmon_fan_min:
drivers/hwmon/nct7904.c: In function 'nct7904_temp_is_visible':
drivers/hwmon/nct7904.c:443:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (channel < 5) {
drivers/hwmon/nct7904.c:450:2: note: here
  case hwmon_temp_max:

Introduced by commit

  af55ab0b0792 ("hwmon: (nct7904) Add extra sysfs support for fan, voltage and temperature.")

I get these warnings 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).

Stephen Rothwell

Content of type "application/pgp-signature" skipped

Powered by blists - more mailing lists