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[PULL 04/35] hw/clock: Only propagate clock changes if the clock is chan
From: |
Peter Maydell |
Subject: |
[PULL 04/35] hw/clock: Only propagate clock changes if the clock is changed |
Date: |
Fri, 28 Aug 2020 10:23:42 +0100 |
From: Philippe Mathieu-Daudé <f4bug@amsat.org>
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>
---
include/hw/clock.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/hw/clock.h b/include/hw/clock.h
index d85af45c967..9ecd78b2c30 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)
--
2.20.1
- [PULL 00/35] target-arm queue, Peter Maydell, 2020/08/28
- [PULL 02/35] hw/clock: Remove unused clock_init*() functions, Peter Maydell, 2020/08/28
- [PULL 03/35] hw/clock: Let clock_set() return boolean value, Peter Maydell, 2020/08/28
- [PULL 01/35] hw/arm/sbsa-ref: fix typo breaking PCIe IRQs, Peter Maydell, 2020/08/28
- [PULL 04/35] hw/clock: Only propagate clock changes if the clock is changed,
Peter Maydell <=
- [PULL 05/35] hw/arm/musicpal: Use AddressSpace for DMA transfers, Peter Maydell, 2020/08/28
- [PULL 06/35] target/arm: Clarify HCR_EL2 ARMCPRegInfo type, Peter Maydell, 2020/08/28
- [PULL 07/35] target/arm: Pass the entire mte descriptor to mte_check_fail, Peter Maydell, 2020/08/28
- [PULL 08/35] target/arm: Fill in the WnR syndrome bit in mte_check_fail, Peter Maydell, 2020/08/28
- [PULL 09/35] hw/sd/allwinner-sdhost: Use AddressSpace for DMA transfers, Peter Maydell, 2020/08/28
- [PULL 10/35] hw/net/allwinner-sun8i-emac: Use AddressSpace for DMA transfers, Peter Maydell, 2020/08/28
- [PULL 11/35] hw/arm/xilinx_zynq: Uninline cadence_uart_create(), Peter Maydell, 2020/08/28
- [PULL 13/35] hw/qdev-clock: Uninline qdev_connect_clock_in(), Peter Maydell, 2020/08/28
- [PULL 12/35] hw/arm/xilinx_zynq: Call qdev_connect_clock_in() before DeviceRealize, Peter Maydell, 2020/08/28
- [PULL 14/35] hw/qdev-clock: Avoid calling qdev_connect_clock_in after DeviceRealize, Peter Maydell, 2020/08/28