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-rw-r--r--include/hw/clock.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/hw/clock.h b/include/hw/clock.h
index bb12117f67..eb58599131 100644
--- a/include/hw/clock.h
+++ b/include/hw/clock.h
@@ -357,6 +357,8 @@ char *clock_display_freq(Clock *clk);
  * @multiplier: multiplier value
  * @divider: divider value
  *
+ * @return: true if the clock is changed.
+ *
  * By default, a Clock's children will all run with the same period
  * as their parent. This function allows you to adjust the multiplier
  * and divider used to derive the child clock frequency.
@@ -374,6 +376,6 @@ char *clock_display_freq(Clock *clk);
  * Note that this function does not call clock_propagate(); the
  * caller should do that if necessary.
  */
-void clock_set_mul_div(Clock *clk, uint32_t multiplier, uint32_t divider);
+bool clock_set_mul_div(Clock *clk, uint32_t multiplier, uint32_t divider);
 
 #endif /* QEMU_HW_CLOCK_H */