powercap: intel_rapl: Simplify rapl_compute_time_window_atom()

Restructure to use early return for to_raw case, eliminating
redundant assignments and clarifying conversion paths.

No functional changes.

Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20260212233044.329790-5-sathyanarayanan.kuppuswamy@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c
index 3bdd21d204689d37475df7d3754d150721934f47..2a77a0ee239b785a5a2bb4f27e8937aa8fefe4b7 100644 (file)
--- a/drivers/powercap/intel_rapl_common.c
+++ b/drivers/powercap/intel_rapl_common.c
@@ -1145,16 +1145,14 @@ static u64 rapl_compute_time_window_core(struct rapl_domain *rd, u64 value,
 static u64 rapl_compute_time_window_atom(struct rapl_domain *rd, u64 value,
                                         bool to_raw)
 {
+       if (to_raw)
+               return div64_u64(value, rd->time_unit);
+
        /*
         * Atom time unit encoding is straight forward val * time_unit,
         * where time_unit is default to 1 sec. Never 0.
         */
-       if (!to_raw)
-               return (value) ? value * rd->time_unit : rd->time_unit;
-
-       value = div64_u64(value, rd->time_unit);
-
-       return value;
+       return (value) ? value * rd->time_unit : rd->time_unit;
 }
 
 static int rapl_check_unit_tpmi(struct rapl_domain *rd)