This is a note to let you know that I've just added the patch titled serial: omap: suspend device on probe errors to the 4.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: serial-omap-suspend-device-on-probe-errors.patch and it can be found in the queue-4.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 77e6fe7fd2b7cba0bf2f2dc8cde51d7b9a35bf74 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan@xxxxxxxxxx> Date: Mon, 10 Apr 2017 11:21:39 +0200 Subject: serial: omap: suspend device on probe errors From: Johan Hovold <johan@xxxxxxxxxx> commit 77e6fe7fd2b7cba0bf2f2dc8cde51d7b9a35bf74 upstream. 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 <shubhrajyoti@xxxxxx> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> Acked-by: Tony Lindgren <tony@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/tty/serial/omap-serial.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -1767,7 +1767,8 @@ static int serial_omap_probe(struct plat 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); Patches currently in stable-queue which might be from johan@xxxxxxxxxx are queue-4.11/usb-serial-ftdi_sio-add-device-id-for-microsemi-arrow-sf2plus-dev-kit.patch queue-4.11/bluetooth-hci_bcm-add-missing-tty-device-sanity-check.patch queue-4.11/bluetooth-hci_intel-add-missing-tty-device-sanity-check.patch queue-4.11/serial-omap-fix-runtime-pm-handling-on-unbind.patch queue-4.11/serial-omap-suspend-device-on-probe-errors.patch queue-4.11/staging-gdm724x-gdm_mux-fix-use-after-free-on-module-unload.patch