This is a note to let you know that I've just added the patch titled of: base: Improve argument length mismatch error to the 5.15-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: of-base-improve-argument-length-mismatch-error.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 5d05b811b5acb92fc581a7b328b36646c86f5ab9 Mon Sep 17 00:00:00 2001 From: Baruch Siach <baruch@xxxxxxxxxx> Date: Thu, 30 Dec 2021 18:31:53 +0200 Subject: of: base: Improve argument length mismatch error From: Baruch Siach <baruch@xxxxxxxxxx> commit 5d05b811b5acb92fc581a7b328b36646c86f5ab9 upstream. The cells_name field of of_phandle_iterator might be NULL. Use the phandle name instead. With this change instead of: OF: /soc/pinctrl@1000000: (null) = 3 found 2 We get: OF: /soc/pinctrl@1000000: phandle pinctrl@1000000 needs 3, found 2 Which is a more helpful messages making DT debugging easier. In this particular example the phandle name looks like duplicate of the same node name. But note that the first node is the parent node (it->parent), while the second is the phandle target (it->node). They happen to be the same in the case that triggered this improvement. See commit 72cb4c48a46a ("arm64: dts: qcom: ipq6018: Fix gpio-ranges property"). Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx> Signed-off-by: Rob Herring <robh@xxxxxxxxxx> Link: https://lore.kernel.org/r/f6a68e0088a552ea9dfd4d8e3b5b586d92594738.1640881913.git.baruch@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/of/base.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1327,9 +1327,14 @@ int of_phandle_iterator_next(struct of_p * property data length */ if (it->cur + count > it->list_end) { - pr_err("%pOF: %s = %d found %td\n", - it->parent, it->cells_name, - count, it->list_end - it->cur); + if (it->cells_name) + pr_err("%pOF: %s = %d found %td\n", + it->parent, it->cells_name, + count, it->list_end - it->cur); + else + pr_err("%pOF: phandle %s needs %d, found %td\n", + it->parent, of_node_full_name(it->node), + count, it->list_end - it->cur); goto err; } } Patches currently in stable-queue which might be from baruch@xxxxxxxxxx are queue-5.15/of-base-improve-argument-length-mismatch-error.patch queue-5.15/arm64-dts-qcom-ipq6018-fix-gpio-ranges-property.patch queue-5.15/of-base-fix-phandle-argument-length-mismatch-error-m.patch