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-rw-r--r--target/linux/generic/hack-5.15/795-backport-phylink_pcs-helpers.patch17
1 files changed, 17 insertions, 0 deletions
diff --git a/target/linux/generic/hack-5.15/795-backport-phylink_pcs-helpers.patch b/target/linux/generic/hack-5.15/795-backport-phylink_pcs-helpers.patch
index 2ccdc905a5..b1e7065a8b 100644
--- a/target/linux/generic/hack-5.15/795-backport-phylink_pcs-helpers.patch
+++ b/target/linux/generic/hack-5.15/795-backport-phylink_pcs-helpers.patch
@@ -1,3 +1,20 @@
+From 027586ae8ecacff49757ed854c020f35d24a599c Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel@makrotopia.org>
+Date: Sat, 11 Mar 2023 03:44:41 +0000
+Subject: [PATCH] generic: backport some phylink helper functions
+
+It isn't feasible to literally backport all upstream phylink_pcs changes
+down to Linux 5.15: It's just too many patches, and many downstream
+drivers and hacks are likely to break. We are too close to branching off
+to risk this, and it's also just too much work.
+Instead just add helper functions used by modern PCS drivers while keeping
+the original functions instact as well. While this may add a kilobyte or
+two of extra kernel size, it has the advantage that we get the best of both
+worlds: None of the existing codepaths are touched, but yet we have the
+option to backport singular improvements to Ethernet drivers where needed.
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -584,10 +584,37 @@ int phylink_speed_up(struct phylink *pl)