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| author | Philippe Mathieu-Daudé | 2020-08-28 11:02:44 +0200 |
|---|---|---|
| committer | Peter Maydell | 2020-08-28 11:02:44 +0200 |
| commit | 96250eab904261b31d9d1ac3abbdb36737635ffa (patch) | |
| tree | 227bdc5607b938775ac69c92205affd1d7fe219d /include/hw/clock.h | |
| parent | hw/clock: Let clock_set() return boolean value (diff) | |
| download | qemu-96250eab904261b31d9d1ac3abbdb36737635ffa.tar.gz qemu-96250eab904261b31d9d1ac3abbdb36737635ffa.tar.xz qemu-96250eab904261b31d9d1ac3abbdb36737635ffa.zip | |
hw/clock: Only propagate clock changes if the clock is changed
Avoid propagating the clock change when the clock does not change.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200806123858.30058-4-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include/hw/clock.h')
| -rw-r--r-- | include/hw/clock.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/hw/clock.h b/include/hw/clock.h index d85af45c96..9ecd78b2c3 100644 --- a/include/hw/clock.h +++ b/include/hw/clock.h @@ -165,8 +165,9 @@ void clock_propagate(Clock *clk); */ static inline void clock_update(Clock *clk, uint64_t value) { - clock_set(clk, value); - clock_propagate(clk); + if (clock_set(clk, value)) { + clock_propagate(clk); + } } static inline void clock_update_hz(Clock *clk, unsigned hz) |