iio: frequency: adf4350: replace TODO with NOTE in adf4350_set_freq()

Replace the TODO comment in adf4350_set_freq() with a NOTE explaining
that a constant-time approach using fls_long() was attempted but deemed
more complex without meaningful benefit for initialization code.

Signed-off-by: Neel Bullywon <neelb2403@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/frequency/adf4350.c b/drivers/iio/frequency/adf4350.c
index 3883b63dcc3cefa1aaddf739fe5ca444eda2901b..6bbb6a8dd9d0d4d0cb2bc7220bb9f8f4d86609bc 100644 (file)
--- a/drivers/iio/frequency/adf4350.c
+++ b/drivers/iio/frequency/adf4350.c
@@ -152,10 +152,10 @@ static int adf4350_set_freq(struct adf4350_state *st, unsigned long long freq)
        st->r4_rf_div_sel = 0;
 
        /*
-        * !\TODO: The below computation is making sure we get a power of 2
-        * shift (st->r4_rf_div_sel) so that freq becomes higher or equal to
-        * ADF4350_MIN_VCO_FREQ. This might be simplified with fls()/fls_long()
-        * and friends.
+        * NOTE: This iteratively shifts freq by a power of 2
+        * (st->r4_rf_div_sel) to meet or exceed ADF4350_MIN_VCO_FREQ.
+        * A constant-time approach using fls_long() was attempted but
+        * deemed more complex without meaningful benefit for init code.
         */
        while (freq < ADF4350_MIN_VCO_FREQ) {
                freq <<= 1;