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| author | Nathan Chancellor <nathan@kernel.org> | 2023-02-15 10:12:12 -0700 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-02-16 10:16:31 +1100 |
| commit | 748ea32d2dbd813d3bd958117bde5191182f909a (patch) | |
| tree | 6bedd59a809ee51fd49552978507c5ebec7cac6d /drivers/macintosh | |
| parent | b0ae5b6f3c298a005b73556740526c0e24a5633c (diff) | |
| download | lwn-748ea32d2dbd813d3bd958117bde5191182f909a.tar.gz lwn-748ea32d2dbd813d3bd958117bde5191182f909a.zip | |
macintosh: windfarm: Use unsigned type for 1-bit bitfields
Clang warns:
drivers/macintosh/windfarm_lm75_sensor.c:63:14: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
lm->inited = 1;
^ ~
drivers/macintosh/windfarm_smu_sensors.c:356:19: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
pow->fake_volts = 1;
^ ~
drivers/macintosh/windfarm_smu_sensors.c:368:18: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
pow->quadratic = 1;
^ ~
There is no bug here since no code checks the actual value of these
fields, just whether or not they are zero (boolean context), but this
can be easily fixed by switching to an unsigned type.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230215-windfarm-wsingle-bit-bitfield-constant-conversion-v1-1-26415072e855@kernel.org
Diffstat (limited to 'drivers/macintosh')
| -rw-r--r-- | drivers/macintosh/windfarm_lm75_sensor.c | 4 | ||||
| -rw-r--r-- | drivers/macintosh/windfarm_smu_sensors.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/drivers/macintosh/windfarm_lm75_sensor.c b/drivers/macintosh/windfarm_lm75_sensor.c index 24f0a444d312..9c6febce2376 100644 --- a/drivers/macintosh/windfarm_lm75_sensor.c +++ b/drivers/macintosh/windfarm_lm75_sensor.c @@ -33,8 +33,8 @@ #endif struct wf_lm75_sensor { - int ds1775 : 1; - int inited : 1; + unsigned int ds1775 : 1; + unsigned int inited : 1; struct i2c_client *i2c; struct wf_sensor sens; }; diff --git a/drivers/macintosh/windfarm_smu_sensors.c b/drivers/macintosh/windfarm_smu_sensors.c index 00c6fe25fcba..2bdb73b34d29 100644 --- a/drivers/macintosh/windfarm_smu_sensors.c +++ b/drivers/macintosh/windfarm_smu_sensors.c @@ -274,8 +274,8 @@ struct smu_cpu_power_sensor { struct list_head link; struct wf_sensor *volts; struct wf_sensor *amps; - int fake_volts : 1; - int quadratic : 1; + unsigned int fake_volts : 1; + unsigned int quadratic : 1; struct wf_sensor sens; }; #define to_smu_cpu_power(c) container_of(c, struct smu_cpu_power_sensor, sens) |