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lantiq: fix boot isues on danube boards

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Enabling SMP on Danube[1] is incompatible with a patch that
adds support for interrupt handling on all cores on other
platforms[2]. This patch fixes the mentioned issue.

1. 084c20f6c5 ("lantiq: xway: kernel: enable SMP support ")
2. fbd33d6164 ("lantiq: enable interrupts on second VPEs")

Fixes: #13934
Fixes: #14283
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
This commit is contained in:
Aleksander Jan Bajkowski 2024-01-21 19:02:33 +01:00 committed by Christian Marangi
parent ad25cfb6b8
commit 65fb97b450
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1 changed files with 33 additions and 0 deletions
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33
target/linux/lantiq/patches-5.15/0321-MIPS-lantiq-register-smp_ops-on-non-smp-platforms.patch Normal file
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@ -0,0 +1,33 @@
From 6e8d8b183accefae42c62f1bd495a405ce454c7d Mon Sep 17 00:00:00 2001
From: Aleksander Jan Bajkowski <olek2@wp.pl>
Date: Sun, 21 Jan 2024 18:36:23 +0100
Subject: [PATCH] MIPS: lantiq: register smp_ops on non-smp platforms
Lantiq uses a common kernel config for devices with 24Kc and 34Kc cores.
The changes made previously to add support for interrupts on all cores
work on 24Kc platforms with SMP disabled and 34Kc platforms with SMP
enabled. This patch fixes boot issues on Danube (single core 24Kc) with
SMP enabled.
Fixes: 730320fd770d ("MIPS: lantiq: enable all hardware interrupts on second VPE")
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
---
arch/mips/lantiq/prom.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/arch/mips/lantiq/prom.c
+++ b/arch/mips/lantiq/prom.c
@@ -123,10 +123,9 @@ void __init prom_init(void)
prom_init_cmdline();
#if defined(CONFIG_MIPS_MT_SMP)
- if (cpu_has_mipsmt) {
- lantiq_smp_ops = vsmp_smp_ops;
+ lantiq_smp_ops = vsmp_smp_ops;
+ if (cpu_has_mipsmt)
lantiq_smp_ops.init_secondary = lantiq_init_secondary;
- register_smp_ops(&lantiq_smp_ops);
- }
+ register_smp_ops(&lantiq_smp_ops);
#endif
}