linux-kernel - [PATCH 5.15 657/667] MIPS: IP27: Remove incorrect `cpu_has

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Message-Id: <20220607164954.351623082@linuxfoundation.org>
Date:   Tue,  7 Jun 2022 19:05:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, "Maciej W. Rozycki" <macro@...am.me.uk>,
        Stephen Zhang <starzhangzsd@...il.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: [PATCH 5.15 657/667] MIPS: IP27: Remove incorrect `cpu_has_fpu override

From: Maciej W. Rozycki <macro@...am.me.uk>

commit 424c3781dd1cb401857585331eaaa425a13f2429 upstream.

Remove unsupported forcing of `cpu_has_fpu' to 1, which makes the `nofpu'
kernel parameter non-functional, and also causes a link error:

ld: arch/mips/kernel/traps.o: in function `trap_init':
./arch/mips/include/asm/msa.h:(.init.text+0x348): undefined reference to `handle_fpe'
ld: ./arch/mips/include/asm/msa.h:(.init.text+0x354): undefined reference to `handle_fpe'
ld: ./arch/mips/include/asm/msa.h:(.init.text+0x360): undefined reference to `handle_fpe'

where the CONFIG_MIPS_FP_SUPPORT configuration option has been disabled.

Signed-off-by: Maciej W. Rozycki <macro@...am.me.uk>
Reported-by: Stephen Zhang <starzhangzsd@...il.com>
Fixes: 0ebb2f4159af ("MIPS: IP27: Update/restructure CPU overrides")
Cc: stable@...r.kernel.org # v4.2+
Signed-off-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/mips/include/asm/mach-ip27/cpu-feature-overrides.h |    1 -
 1 file changed, 1 deletion(-)

--- a/arch/mips/include/asm/mach-ip27/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-ip27/cpu-feature-overrides.h
@@ -26,7 +26,6 @@
 #define cpu_has_3k_cache		0
 #define cpu_has_4k_cache		1
 #define cpu_has_tx39_cache		0
-#define cpu_has_fpu			1
 #define cpu_has_nofpuex			0
 #define cpu_has_32fpr			1
 #define cpu_has_counter			1