diff mbox series

spi: imx: fix the unbalanced spi runtime pm management

Message ID 20201124085247.18025-1-xiaoning.wang@nxp.com
State Accepted
Commit 7cd71202961090d8f2d2b863ec66b25ae43e1d39
Headers show
Series spi: imx: fix the unbalanced spi runtime pm management | expand

Commit Message

Clark Wang Nov. 24, 2020, 8:52 a.m. UTC 
If set active without increase the usage count of pm, the dont use
autosuspend function will call the suspend callback to close the two
clocks of spi because the usage count is reduced to -1.
This will cause the warning dump below when the defer-probe occurs.

[  129.379701] ecspi2_root_clk already disabled
[  129.384005] WARNING: CPU: 1 PID: 33 at drivers/clk/clk.c:952 clk_core_disable+0xa4/0xb0

So add the get noresume function before set active.

Fixes: 43b6bf406cd0 spi: imx: fix runtime pm support for !CONFIG_PM
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
---
 drivers/spi/spi-imx.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 7513ef552d79..73ca821763d6 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -1659,6 +1659,7 @@  static int spi_imx_probe(struct platform_device *pdev)
 
 	pm_runtime_set_autosuspend_delay(spi_imx->dev, MXC_RPM_TIMEOUT);
 	pm_runtime_use_autosuspend(spi_imx->dev);
+	pm_runtime_get_noresume(spi_imx->dev);
 	pm_runtime_set_active(spi_imx->dev);
 	pm_runtime_enable(spi_imx->dev);