FAILED: patch "[PATCH] hwrng: mtk - Use devm_pm_runtime_enable" failed to apply to 4.19-stable tree

FAILED: patch "[PATCH] hwrng: mtk - Use devm_pm_runtime_enable" failed to apply to 4.19-stable tree

[gregkh]

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 78cb66caa6ab5385ac2090f1aae5f3c19e08f522
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2024100129-herring-nutcase-68d7@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^..

Possible dependencies:

78cb66caa6ab ("hwrng: mtk - Use devm_pm_runtime_enable")

thanks,

greg k-h

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

From 78cb66caa6ab5385ac2090f1aae5f3c19e08f522 Mon Sep 17 00:00:00 2001
From: Guoqing Jiang <guoqing.jiang@canonical.com>
Date: Mon, 26 Aug 2024 15:04:15 +0800
Subject: [PATCH] hwrng: mtk - Use devm_pm_runtime_enable

Replace pm_runtime_enable with the devres-enabled version which
can trigger pm_runtime_disable.

Otherwise, the below appears during reload driver.

mtk_rng 1020f000.rng: Unbalanced pm_runtime_enable!

Fixes: 81d2b34508c6 ("hwrng: mtk - add runtime PM support")
Cc: <stable@vger.kernel.org>
Suggested-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Guoqing Jiang <guoqing.jiang@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/mtk-rng.c b/drivers/char/hw_random/mtk-rng.c
index aa993753ab12..1e3048f2bb38 100644
--- a/drivers/char/hw_random/mtk-rng.c
+++ b/drivers/char/hw_random/mtk-rng.c
@@ -142,7 +142,7 @@ static int mtk_rng_probe(struct platform_device *pdev)
 	dev_set_drvdata(&pdev->dev, priv);
 	pm_runtime_set_autosuspend_delay(&pdev->dev, RNG_AUTOSUSPEND_TIMEOUT);
 	pm_runtime_use_autosuspend(&pdev->dev);
-	pm_runtime_enable(&pdev->dev);
+	devm_pm_runtime_enable(&pdev->dev);
 
 	dev_info(&pdev->dev, "registered RNG driver\n");