diff options
| author | Tony Lindgren <tony@atomide.com> | 2017-01-20 12:22:31 -0800 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2017-06-13 09:29:20 -0400 |
| commit | ddfc6a095d10d9ff391d50c8935baf56749b4e6c (patch) | |
| tree | 20afdcd6b4d2cc90cbe9ae10e78bbae96127894d | |
| parent | 2c7105e86e3d44ede962f691d031b312060e7387 (diff) | |
serial: 8250_omap: Fix probe and remove for PM runtime
[ Upstream commit 4e0f5cc65098ea32a1e77baae74215b9bd5276b1 ]
Otherwise the interconnect related code implementing PM runtime will
produce these errors on a failed probe:
omap_uart 48066000.serial: omap_device: omap_device_enable() called from invalid state 1
omap_uart 48066000.serial: use pm_runtime_put_sync_suspend() in driver?
Note that we now also need to check for priv in omap8250_runtime_suspend()
as it has not yet been registered if probe fails. And we need to use
pm_runtime_put_sync() to properly idle the device like we already do
in omap8250_remove().
Fixes: 61929cf0169d ("tty: serial: Add 8250-core based omap driver")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
| -rw-r--r-- | drivers/tty/serial/8250/8250_omap.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index dce1a23706e8..531d76a276e4 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -1176,7 +1176,8 @@ static int omap8250_probe(struct platform_device *pdev) pm_runtime_put_autosuspend(&pdev->dev); return 0; err: - pm_runtime_put(&pdev->dev); + pm_runtime_dont_use_autosuspend(&pdev->dev); + pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return ret; } @@ -1185,6 +1186,7 @@ static int omap8250_remove(struct platform_device *pdev) { struct omap8250_priv *priv = platform_get_drvdata(pdev); + pm_runtime_dont_use_autosuspend(&pdev->dev); pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); serial8250_unregister_port(priv->line); @@ -1288,6 +1290,10 @@ static int omap8250_runtime_suspend(struct device *dev) struct omap8250_priv *priv = dev_get_drvdata(dev); struct uart_8250_port *up; + /* In case runtime-pm tries this before we are setup */ + if (!priv) + return 0; + up = serial8250_get_port(priv->line); /* * When using 'no_console_suspend', the console UART must not be |