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generic: 5.15: allow MV88E6xxx built-in when PTP support disabled

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As described in commit 97c77fff28cf001399f33c7bc1ec6687ba18450b
MV88E6xxx driver (NET_DSA_MV88E6XXX) cannot be built-in when PTP
(PTP_1588_CLOCK) is a module in Linux 5.15. But actually it should be
allowed to be built-in when its PTP support (NET_DSA_MV88E6XXX_PTP) is
disabled.

This adds a patch to fix that.

Signed-off-by: Johnny S. Lee <foss@jsl.io>
This commit is contained in:
Johnny S. Lee 2022-12-15 18:57:31 +08:00 committed by Hauke Mehrtens
parent ee0cade014
commit 8be6350f66
1 changed files with 44 additions and 0 deletions
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44
target/linux/generic/hack-5.15/290-net-dsa-mv88e6xxx-depend-on-PTP-conditionally.patch Normal file
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@ -0,0 +1,44 @@
From e6866ed4219b8c7754dcd3eb1a654f6f524b0e56 Mon Sep 17 00:00:00 2001
From: "Johnny S. Lee" <foss@jsl.io>
Date: Thu, 15 Dec 2022 17:49:04 +0800
Subject: [PATCH] net: dsa: mv88e6xxx: depend on PTP conditionally
PTP hardware timestamping related objects are not linked when PTP
support for MV88E6xxx (NET_DSA_MV88E6XXX_PTP) is disabled, therefore
NET_DSA_MV88E6XXX should not depend on PTP_1588_CLOCK_OPTIONAL
regardless of NET_DSA_MV88E6XXX_PTP.
Instead, condition more strictly on how NET_DSA_MV88E6XXX_PTP's
dependencies are met, making sure that it cannot be enabled when
NET_DSA_MV88E6XXX=y and PTP_1588_CLOCK=m.
In other words, this commit allows NET_DSA_MV88E6XXX to be built-in
while PTP_1588_CLOCK is a module, as long as NET_DSA_MV88E6XXX_PTP is
prevented from being enabled.
Fixes: e5f31552674e ("ethernet: fix PTP_1588_CLOCK dependencies")
Signed-off-by: Johnny S. Lee <foss@jsl.io>
---
drivers/net/dsa/mv88e6xxx/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/dsa/mv88e6xxx/Kconfig
+++ b/drivers/net/dsa/mv88e6xxx/Kconfig
@@ -2,7 +2,6 @@
config NET_DSA_MV88E6XXX
tristate "Marvell 88E6xxx Ethernet switch fabric support"
depends on NET_DSA
- depends on PTP_1588_CLOCK_OPTIONAL
select IRQ_DOMAIN
select NET_DSA_TAG_EDSA
select NET_DSA_TAG_DSA
@@ -13,7 +12,8 @@ config NET_DSA_MV88E6XXX
config NET_DSA_MV88E6XXX_PTP
bool "PTP support for Marvell 88E6xxx"
default n
- depends on NET_DSA_MV88E6XXX && PTP_1588_CLOCK
+ depends on (NET_DSA_MV88E6XXX = y && PTP_1588_CLOCK = y) || \
+ (NET_DSA_MV88E6XXX = m && PTP_1588_CLOCK)
help
Say Y to enable PTP hardware timestamping on Marvell 88E6xxx switch
chips that support it.