[PATCH v2 2/4] clk: mvebu: armada-37xx-periph: change suspend/resume time

Miquel Raynal
2019-05-21T13:04:22Z

Armada 3700 PCIe IP relies on the PCIe clock managed by this
driver. For reasons related to the PCI core's organization when
suspending/resuming, PCI host controller drivers must reconfigure
their register at suspend_noirq()/resume_noirq() which happens after
suspend()/suspend_late() and before resume_early()/resume().

Device link support in the clock framework enforce that the clock
driver's resume() callback will be called before the PCIe
driver's. But, any resume_noirq() callback will be called before all
the registered resume() callbacks.

The solution to support PCIe resume operation is to change the
"priority" of this clock driver PM callbacks to "_noirq()".

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/clk/mvebu/armada-37xx-periph.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/mvebu/armada-37xx-periph.c b/drivers/clk/mvebu/armada-37xx-periph.c
index 1e18c5a875bd..bee45e43a85f 100644
--- a/drivers/clk/mvebu/armada-37xx-periph.c
+++ b/drivers/clk/mvebu/armada-37xx-periph.c
@@ -715,8 +715,8 @@ static int __maybe_unused armada_3700_periph_clock_resume(struct device *dev)
}

static const struct dev_pm_ops armada_3700_periph_clock_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(armada_3700_periph_clock_suspend,
- armada_3700_periph_clock_resume)
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(armada_3700_periph_clock_suspend,
+ armada_3700_periph_clock_resume)
};

static int armada_3700_periph_clock_probe(struct platform_device *pdev)
--
2.19.1