@@ -2130,7 +2130,11 @@ static int __maybe_unused atmel_xdmac_suspend(struct device *dev)
atxdmac->save_gim = at_xdmac_read(atxdmac, AT_XDMAC_GIM);
at_xdmac_off(atxdmac);
- return pm_runtime_force_suspend(atxdmac->dev);
+ pm_runtime_mark_last_busy(atxdmac->dev);
+ pm_runtime_put_noidle(atxdmac->dev);
+ clk_disable_unprepare(atxdmac->clk);
+
+ return 0;
}
static int __maybe_unused atmel_xdmac_resume(struct device *dev)
@@ -2142,10 +2146,12 @@ static int __maybe_unused atmel_xdmac_resume(struct device *dev)
int i;
int ret;
- ret = pm_runtime_force_resume(atxdmac->dev);
- if (ret < 0)
+ ret = clk_prepare_enable(atxdmac->clk);
+ if (ret)
return ret;
+ pm_runtime_get_noresume(atxdmac->dev);
+
at_xdmac_axi_config(pdev);
/* Clear pending interrupts. */
Runtime PM APIs for at_xdmac just plays with clk_enable()/clk_disable() letting aside the clk_prepare()/clk_unprepare() that needs to be executed as the clock is also prepared on probe. Thus instead of using runtime PM force suspend/resume APIs use clk_disable_unprepare() + pm_runtime_put_noidle() on suspend and clk_prepare_enable() + pm_runtime_get_noresume() on resume. This approach as been chosen instead of using runtime PM force suspend/resume with clk_unprepare()/clk_prepare() as it looks simpler and the final code is better. While at it added the missing pm_runtime_mark_last_busy() on suspend before decrementing the reference counter. Fixes: 650b0e990cbd ("dmaengine: at_xdmac: add runtime pm support") Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> --- drivers/dma/at_xdmac.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)