The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y git checkout FETCH_HEAD git cherry-pick -x 9a8ad10c9f2e0925ff26308ec6756b93fc2f4977 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023050601-manhole-creamlike-94e6@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 9a8ad10c9f2e0925ff26308ec6756b93fc2f4977 Mon Sep 17 00:00:00 2001 From: Johan Hovold johan+linaro@kernel.org Date: Tue, 4 Apr 2023 09:25:14 +0200 Subject: [PATCH] USB: dwc3: fix runtime pm imbalance on probe errors

Make sure not to suspend the device when probe fails to avoid disabling clocks and phys multiple times.

Fixes: 328082376aea ("usb: dwc3: fix runtime PM in error path") Cc: stable@vger.kernel.org # 4.8 Cc: Roger Quadros rogerq@ti.com Acked-by: Thinh Nguyen Thinh.Nguyen@synopsys.com Signed-off-by: Johan Hovold johan+linaro@kernel.org Link: https://lore.kernel.org/r/20230404072524.19014-2-johan+linaro@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index ed0ab90d3fac..d2350a87450e 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1895,13 +1895,11 @@ static int dwc3_probe(struct platform_device *pdev) spin_lock_init(&dwc->lock); mutex_init(&dwc->mutex);

+ pm_runtime_get_noresume(dev); pm_runtime_set_active(dev); pm_runtime_use_autosuspend(dev); pm_runtime_set_autosuspend_delay(dev, DWC3_DEFAULT_AUTOSUSPEND_DELAY); pm_runtime_enable(dev); - ret = pm_runtime_get_sync(dev); - if (ret < 0) - goto err1;

pm_runtime_forbid(dev);

@@ -1966,12 +1964,10 @@ err3: dwc3_free_event_buffers(dwc);

err2: - pm_runtime_allow(&pdev->dev); - -err1: - pm_runtime_put_sync(&pdev->dev); - pm_runtime_disable(&pdev->dev); - + pm_runtime_allow(dev); + pm_runtime_disable(dev); + pm_runtime_set_suspended(dev); + pm_runtime_put_noidle(dev); disable_clks: dwc3_clk_disable(dwc); assert_reset: