From: Antonio Ospite <a...@ao2.it>
In commit 7dd62787334ac6e0e2a0ef3f20bb1936ac431b04 (spi/pxa2xx: Convert
to core runtime PM) master->auto_runtime_pm was set to true.
In this case pm_runtime_enable() must be called *before*
spi_register_master(), otherwise the kernel hangs with this error
message:
spi_master spi0: Failed to power device: -13
A similar fix, but for spi/hspi, was applied in
268d76430d1b68c340687357ffd18b4b12d02269.
Signed-off-by: Antonio Ospite <a...@ao2.it>
Signed-off-by: Mark Brown <broo...@linaro.org>
(cherry picked from commit 836d1a22db9ee0a466301465e873bc94da86cb15)
Signed-off-by: Chang Rebecca Swee Fun <rebecca.swee.fun.ch...@intel.com>
---
drivers/spi/spi-pxa2xx.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 3971e23..9e67394 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1214,6 +1214,11 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
tasklet_init(&drv_data->pump_transfers, pump_transfers,
(unsigned long)drv_data);
+ pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
/* Register with the SPI framework */
platform_set_drvdata(pdev, drv_data);
status = spi_register_master(master);
@@ -1222,11 +1227,6 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
goto out_error_clock_enabled;
}
- pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
- pm_runtime_use_autosuspend(&pdev->dev);
- pm_runtime_set_active(&pdev->dev);
- pm_runtime_enable(&pdev->dev);
-
return status;
out_error_clock_enabled:
--
1.9.1
--
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