ARM: bugs: prepare processor bug infrastructure

Commit a5b9177f69329314721aa7022b7e69dab23fa1f0 upstream.

Prepare the processor bug infrastructure so that it can be expanded to
check for per-processor bugs.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Boot-tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: David A. Long <dave.long@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm/include/asm/bugs.h b/arch/arm/include/asm/bugs.h
index a97f1ea708d19f339649a2ece287a69a5fe32a40..ed122d294f3f9aff11e09dc951b7f5e8ff9a1d2e 100644 (file)
--- a/arch/arm/include/asm/bugs.h
+++ b/arch/arm/include/asm/bugs.h
@@ -10,10 +10,10 @@
 #ifndef __ASM_BUGS_H
 #define __ASM_BUGS_H
 
-#ifdef CONFIG_MMU
 extern void check_writebuffer_bugs(void);
 
-#define check_bugs() check_writebuffer_bugs()
+#ifdef CONFIG_MMU
+extern void check_bugs(void);
 #else
 #define check_bugs() do { } while (0)
 #endif

diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 499f978fb1fd612c5e0f1e6fce6c44fac5c5ef0b..50de918252b71c76302fa97853998689ad2b620b 100644 (file)
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -31,6 +31,7 @@ else
 obj-y          += entry-armv.o
 endif
 
+obj-$(CONFIG_MMU)              += bugs.o
 obj-$(CONFIG_CPU_IDLE)         += cpuidle.o
 obj-$(CONFIG_ISA_DMA_API)      += dma.o
 obj-$(CONFIG_FIQ)              += fiq.o fiqasm.o

diff --git a/arch/arm/kernel/bugs.c b/arch/arm/kernel/bugs.c
new file mode 100644 (file)
index 0000000..8802402
--- /dev/null
+++ b/arch/arm/kernel/bugs.c
@@ -0,0 +1,9 @@
+// SPDX-Identifier: GPL-2.0
+#include <linux/init.h>
+#include <asm/bugs.h>
+#include <asm/proc-fns.h>
+
+void __init check_bugs(void)
+{
+       check_writebuffer_bugs();
+}