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patch "serial: omap: suspend device on probe errors" added to tty-testing

PATCH [email protected] 1 participant 1 message Apr 11, 2017

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This is a note to let you know that I've just added the patch titled

serial: omap: suspend device on probe errors

to my tty git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
in the tty-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the tty-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

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From 77e6fe7fd2b7cba0bf2f2dc8cde51d7b9a35bf74 Mon Sep 17 00:00:00 2001

From: Johan Hovold <[email protected]>
Date: Mon, 10 Apr 2017 11:21:39 +0200
Subject: serial: omap: suspend device on probe errors

Make sure to actually suspend the device before returning after a failed (or deferred) probe.

Note that autosuspend must be disabled before runtime pm is disabled in order to balance the usage count due to a negative autosuspend delay as well as to make the final put suspend the device synchronously.

Fixes 388bc2622680 ("omap-serial: Fix the error handling in the omap_serial probe")
Cc Shubhrajyoti D <[email protected]>
Cc stable <[email protected]>
---
 drivers/tty/serial/omap-serial.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/tty/serial/omap-serial.c +2 -1
index 50f2c5a5e450..1ea05ac57aa7 100644
@@ -1770,7 +1770,8 @@ static int serial_omap_probe(struct platform_device *pdev)
 	return 0;
 
 err_add_port:
-	pm_runtime_put(&pdev->dev);
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
+	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	pm_qos_remove_request(&up->pm_qos_request);
 	device_init_wakeup(up->dev, false);
Signature · 1 line
2.12.2