linux-kernel - [PATCH] MIPS: Fix HOTPLUG

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Message-Id: <20251027-mips_paralell_hotplug-v1-1-82567f3e4b85@bootlin.com>
Date: Mon, 27 Oct 2025 17:15:35 +0100
From: Gregory CLEMENT <gregory.clement@...tlin.com>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Benoît Monin <benoit.monin@...tlin.com>, 
 Théo Lebrun <theo.lebrun@...tlin.com>, 
 Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, linux-mips@...r.kernel.org, 
 linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>, 
 Gregory CLEMENT <gregory.clement@...tlin.com>
Subject: [PATCH] MIPS: Fix HOTPLUG_PARALLEL dependency

With MIPS, it is possible to have SMP enabled without HOTPLUG_CPU
selected. However, in kernel/cpu.c, some code that uses
HOTPLUG_PARALLEL also requires HOTPLUG_CPU to be selected. Therefore,
we should fix the HOTPLUG_PARALLEL dependency to depend on
HOTPLUG_CPU, not just SMP.

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202510270120.21wA1aX1-lkp@intel.com/
Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
---
 arch/mips/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index e8683f58fd3e2..b88b97139fa8e 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -658,7 +658,7 @@ config EYEQ
 	select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
 	select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
 	select USE_OF
-	select HOTPLUG_PARALLEL if SMP
+	select HOTPLUG_PARALLEL if HOTPLUG_CPU
 	help
 	  Select this to build a kernel supporting EyeQ SoC from Mobileye.
 

---
base-commit: dcb6fa37fd7bc9c3d2b066329b0d27dedf8becaa
change-id: 20251027-mips_paralell_hotplug-e9ae2b1fa126

Best regards,
-- 
Grégory CLEMENT, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com