powerpc/therm_adt746x: Record pwm invert bit at module load time]
In commit 0512a9a8, we unilaterally zero the "pwm invert" bit in the fan behavior configuration register. On my PowerBook G4, this results in the fans going to full speed at low temperature and shutting off at high temperature because the pwm invert bit is supposed to be set. Therefore, record the pwm invert bit at driver load time, and write the bit into the fan behavior control register. This restores correct behavior on my PBG4 and should work around the bit being set to the wrong value after suspend/resume (which is what the original patch was trying to fix). It also fixes a minor omission where the pwm invert bit correction is NOT performed when switching into automatic mode. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> CC: <stable@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Loading
Please register or sign in to comment