Fix the register value comparison in the `max31335_volatile_reg`
function for the interrupt status register.
MAX31335_STATUS1 macro definition corresponds to the actual
interrupt status register.
Fixes: dedaf03b99 ("rtc: max31335: add driver support")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240219091616.24480-1-antoniu.miclaus@analog.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Clang warns (or errors with CONFIG_WERROR=y):
drivers/rtc/rtc-max31335.c:211:36: error: use of logical '||' with constant operand [-Werror,-Wconstant-logical-operand]
211 | if (reg == MAX31335_TEMP_DATA_MSB || MAX31335_TEMP_DATA_LSB)
| ^ ~~~~~~~~~~~~~~~~~~~~~~
drivers/rtc/rtc-max31335.c:211:36: note: use '|' for a bitwise operation
211 | if (reg == MAX31335_TEMP_DATA_MSB || MAX31335_TEMP_DATA_LSB)
| ^~
| |
1 error generated.
This clearly should be a comparison against reg. Fix the comparison so
that max31335_volatile_reg() does not always return true.
Closes: https://github.com/ClangBuiltLinux/linux/issues/1980
Fixes: dedaf03b99 ("rtc: max31335: add driver support")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20240117-rtc-max3133-fix-comparison-v1-1-91e98b29d564@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
There is no race condition when accessing MAX31335_STATUS1 because it is
always about clearing the alarm interrupt bit.
Reviewed-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://lore.kernel.org/r/20240115232215.273374-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
