FAILED: patch "[PATCH] of: platform: Use default match table for /firmware" failed to apply to 5.15-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 5.15-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-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x 48e6a9c4a20870e09f85ff1a3628275d6bce31c0
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026012750-reshoot-angler-7553@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

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

From 48e6a9c4a20870e09f85ff1a3628275d6bce31c0 Mon Sep 17 00:00:00 2001
From: "Rob Herring (Arm)" <robh@kernel.org>
Date: Tue, 13 Jan 2026 19:51:58 -0600
Subject: [PATCH] of: platform: Use default match table for /firmware

Calling of_platform_populate() without a match table will only populate
the immediate child nodes under /firmware. This is usually fine, but in
the case of something like a "simple-mfd" node such as
"raspberrypi,bcm2835-firmware", those child nodes will not be populated.
And subsequent calls won't work either because the /firmware node is
marked as processed already.

Switch the call to of_platform_default_populate() to solve this problem.
It should be a nop for existing cases.

Fixes: 3aa0582fdb82 ("of: platform: populate /firmware/ node from of_platform_default_populate_init()")
Cc: stable@vger.kernel.org
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://patch.msgid.link/20260114015158.692170-2-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index f77cb19973a5..a6dca3a005aa 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -569,7 +569,7 @@ static int __init of_platform_default_populate_init(void)
 
 		node = of_find_node_by_path("/firmware");
 		if (node) {
-			of_platform_populate(node, NULL, NULL, NULL);
+			of_platform_default_populate(node, NULL, NULL);
 			of_node_put(node);
 		}