From: Nathan Chancellor nathan@kernel.org
[ Upstream commit 748ea32d2dbd813d3bd958117bde5191182f909a ]
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-co... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/macintosh/windfarm_lm75_sensor.c | 4 ++-- 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 6cdfe714901d5..1332fc789056a 100644 --- a/drivers/macintosh/windfarm_lm75_sensor.c +++ b/drivers/macintosh/windfarm_lm75_sensor.c @@ -34,8 +34,8 @@ #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 172fd267dcf60..0f4017a8189e5 100644 --- a/drivers/macintosh/windfarm_smu_sensors.c +++ b/drivers/macintosh/windfarm_smu_sensors.c @@ -275,8 +275,8 @@ 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)